420 imperial quarts in imperial gallons

Conversion formula
How to convert 420 imperial quarts to imperial gallons?

We know (by definition) that: $1\mathrm{imperialquart}\approx 0.25\mathrm{imperialgallon}$

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

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

Conclusion: 420 ⁢ imperialquart ≈ 105.0 ⁢ imperialgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial gallon is equal to 0.00952380952380952 times 420 imperial quarts.

It can also be expressed as: 420 imperial quarts is equal to $\frac{1}{\mathrm{0.00952380952380952}}$ imperial gallons.

Approximation

An approximate numerical result would be: four hundred and twenty imperial quarts is about one hundred and five imperial gallons, or alternatively, a imperial gallon is about zero point zero one times four hundred and twenty imperial quarts.