Finding the Fourth Proportional to 781,697.99, 1,172,248.09 and 426,522.17
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Solution
The fourth proportional to 781,697.99, 1,172,248.09 and 426,522.17 is: 639,620.17
Step by Step Solution
- Step 1: Write the proportion equation
781,697.99 : 1,172,248.09 = 426,522.17 : x - Step 2: Convert to fraction form
781,697.99/1,172,248.09 = 426,522.17/x - Step 3: Cross multiply
781,697.99x = 1,172,248.09 × 426,522.17 - Step 4: Simplify right side
781,697.99x = 499,989,799,125.16 - Step 5: Solve for x
x = 499,989,799,125.16/781,697.99 - Step 6: Final answer
x = 639,620.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.