Finding the Fourth Proportional to 912,699.20, 1,259,572.08 and 525,572.08
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Solution
The fourth proportional to 912,699.20, 1,259,572.08 and 525,572.08 is: 725,316.64
Step by Step Solution
- Step 1: Write the proportion equation
912,699.20 : 1,259,572.08 = 525,572.08 : x - Step 2: Convert to fraction form
912,699.20/1,259,572.08 = 525,572.08/x - Step 3: Cross multiply
912,699.20x = 1,259,572.08 × 525,572.08 - Step 4: Simplify right side
912,699.20x = 661,995,917,995.53 - Step 5: Solve for x
x = 661,995,917,995.53/912,699.20 - Step 6: Final answer
x = 725,316.64
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.