Finding the Fourth Proportional to 667,704.28, 921,432.26 and 361,780.91
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Solution
The fourth proportional to 667,704.28, 921,432.26 and 361,780.91 is: 499,257.84
Step by Step Solution
- Step 1: Write the proportion equation
667,704.28 : 921,432.26 = 361,780.91 : x - Step 2: Convert to fraction form
667,704.28/921,432.26 = 361,780.91/x - Step 3: Cross multiply
667,704.28x = 921,432.26 × 361,780.91 - Step 4: Simplify right side
667,704.28x = 333,356,598,687.29 - Step 5: Solve for x
x = 333,356,598,687.29/667,704.28 - Step 6: Final answer
x = 499,257.84
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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.