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Finding the Fourth Proportional to 636,294.87, 878,092.87 and 349,817

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Solution

The fourth proportional to 636,294.87, 878,092.87 and 349,817 is: 482,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,294.87 : 878,092.87 = 349,817 : x
  2. Step 2: Convert to fraction form
    636,294.87/878,092.87 = 349,817/x
  3. Step 3: Cross multiply
    636,294.87x = 878,092.87 × 349,817
  4. Step 4: Simplify right side
    636,294.87x = 307,171,813,504.79
  5. Step 5: Solve for x
    x = 307,171,813,504.79/636,294.87
  6. Step 6: Final answer
    x = 482,750.73

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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.