What is 80.4 percent of 900 - 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 900 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 900 is 100%, so we can write it down as 900=100%.
4. We know, that x is 80.4% of the output value, so we can write it down as x=80.4%.
5. Now we have two simple equations:
1) 900=100%
2) x=80.4%
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:
900/x=100%/80.4%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 80.4% of 900

900/x=100/80.4
(900/x)*x=(100/80.4)*x       - we multiply both sides of the equation by x
900=1.2437810945274*x       - we divide both sides of the equation by (1.2437810945274) to get x
900/1.2437810945274=x
723.6=x
x=723.6

now we have:
80.4% of 900=723.6