Finding the Fourth Proportional to 690,717.69, 952,937.60 and 418,589.28
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Solution
The fourth proportional to 690,717.69, 952,937.60 and 418,589.28 is: 577,499.99
Step by Step Solution
- Step 1: Write the proportion equation
690,717.69 : 952,937.60 = 418,589.28 : x - Step 2: Convert to fraction form
690,717.69/952,937.60 = 418,589.28/x - Step 3: Cross multiply
690,717.69x = 952,937.60 × 418,589.28 - Step 4: Simplify right side
690,717.69x = 398,889,461,775.98 - Step 5: Solve for x
x = 398,889,461,775.98/690,717.69 - Step 6: Final answer
x = 577,499.99
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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.