578 dry quarts in US quarts
Result
The conversion result is: 578 dry quarts is equivalent to 672.588073593074 US quarts.[1]
Conversion formula
How to convert 578 dry quarts to US quarts?
We know (by definition) that: 1 dryquart ≈ 1.16364718614719 usquart.
We can set up a proportion to solve for the number of US quarts.
1 dryquart / 578 dryquart ≈ 1.16364718614719 usquart / x usquart
Now, we cross multiply to solve for our unknown x:
x usquart ≈ (578 dryquart / 1 dryquart) * 1.16364718614719 usquart → x usquart ≈ 672.5880735930758 usquart
Conclusion:
578 dryquart ≈ 672.5880735930758 usquart

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US quart is equal to 0.0014867941304071 times 578 dry quarts.
It can also be expressed as: 578 dry quarts is equal to 1 / 0.0014867941304071 US quarts.
Approximation
An approximate numerical result would be: five hundred and seventy-eight dry quarts is about six hundred and seventy-two point five nine US quarts, or alternatively, a US quart is about zero times five hundred and seventy-eight dry quarts.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.