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Finding the Fourth Proportional to 391,732.92, 537,070.80 and 384,647.04

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Solution

The fourth proportional to 391,732.92, 537,070.80 and 384,647.04 is: 527,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,732.92 : 537,070.80 = 384,647.04 : x
  2. Step 2: Convert to fraction form
    391,732.92/537,070.80 = 384,647.04/x
  3. Step 3: Cross multiply
    391,732.92x = 537,070.80 × 384,647.04
  4. Step 4: Simplify right side
    391,732.92x = 206,582,693,490.43
  5. Step 5: Solve for x
    x = 206,582,693,490.43/391,732.92
  6. Step 6: Final answer
    x = 527,355.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.