421 imperial cups in dry gallons

Conversion formula
How to convert 421 imperial cups to dry gallons?

We know (by definition) that: $1\mathrm{brcup}\approx 0.0645035464680438\mathrm{drygallon}$

We can set up a proportion to solve for the number of dry gallons.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 421 ⁢ brcup ≈ 27.155993063046438 ⁢ drygallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 dry gallon is equal to 0.0368242839684912 times 421 imperial cups.

It can also be expressed as: 421 imperial cups is equal to $\frac{1}{\mathrm{0.0368242839684912}}$ dry gallons.

Approximation

An approximate numerical result would be: four hundred and twenty-one imperial cups is about twenty-seven point one six dry gallons, or alternatively, a dry gallon is about zero point zero four times four hundred and twenty-one imperial cups.