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Finding the Fourth Proportional to 636,253.74, 878,046.91 and 349,781.04

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Solution

The fourth proportional to 636,253.74, 878,046.91 and 349,781.04 is: 482,707.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,253.74 : 878,046.91 = 349,781.04 : x
  2. Step 2: Convert to fraction form
    636,253.74/878,046.91 = 349,781.04/x
  3. Step 3: Cross multiply
    636,253.74x = 878,046.91 × 349,781.04
  4. Step 4: Simplify right side
    636,253.74x = 307,124,156,958.35
  5. Step 5: Solve for x
    x = 307,124,156,958.35/636,253.74
  6. Step 6: Final answer
    x = 482,707.04

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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.