Finding the Fourth Proportional to 636,336.81, 878,122.36 and 349,854.70
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Solution
The fourth proportional to 636,336.81, 878,122.36 and 349,854.70 is: 482,787.15
Step by Step Solution
- Step 1: Write the proportion equation
636,336.81 : 878,122.36 = 349,854.70 : x - Step 2: Convert to fraction form
636,336.81/878,122.36 = 349,854.70/x - Step 3: Cross multiply
636,336.81x = 878,122.36 × 349,854.70 - Step 4: Simplify right side
636,336.81x = 307,215,234,821.09 - Step 5: Solve for x
x = 307,215,234,821.09/636,336.81 - Step 6: Final answer
x = 482,787.15
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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.