Finding the Fourth Proportional to 636,331.87, 878,115.53 and 349,849.75
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Solution
The fourth proportional to 636,331.87, 878,115.53 and 349,849.75 is: 482,780.31
Step by Step Solution
- Step 1: Write the proportion equation
636,331.87 : 878,115.53 = 349,849.75 : x - Step 2: Convert to fraction form
636,331.87/878,115.53 = 349,849.75/x - Step 3: Cross multiply
636,331.87x = 878,115.53 × 349,849.75 - Step 4: Simplify right side
636,331.87x = 307,208,498,641.62 - Step 5: Solve for x
x = 307,208,498,641.62/636,331.87 - Step 6: Final answer
x = 482,780.31
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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.