52.8 is what percent of 409 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 409 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 409, so we can write it down as 100%=409.
4. We know, that x% equals 52.8 of the output value, so we can write it down as x%=52.8.
5. Now we have two simple equations:
1) 100%=409
2) x%=52.8
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=409/52.8
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 52.8 is what percent of 409

100%/x%=409/52.8
(100/x)*x=(409/52.8)*x       - we multiply both sides of the equation by x
100=7.7462121212121*x       - we divide both sides of the equation by (7.7462121212121) to get x
100/7.7462121212121=x
12.909535452323=x
x=12.909535452323

now we have:
52.8 is 12.909535452323% of 409