What is 870 percent of 45 - 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 45 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 45 is 100%, so we can write it down as 45=100%.
4. We know, that x is 870% of the output value, so we can write it down as x=870%.
5. Now we have two simple equations:
1) 45=100%
2) x=870%
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:
45/x=100%/870%
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 870% of 45

45/x=100/870
(45/x)*x=(100/870)*x       - we multiply both sides of the equation by x
45=0.11494252873563*x       - we divide both sides of the equation by (0.11494252873563) to get x
45/0.11494252873563=x
391.5=x
x=391.5

now we have:
870% of 45=391.5