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Finding the Fourth Proportional to 636,269.88, 878,052.78 and 349,791.24

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Solution

The fourth proportional to 636,269.88, 878,052.78 and 349,791.24 is: 482,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,269.88 : 878,052.78 = 349,791.24 : x
  2. Step 2: Convert to fraction form
    636,269.88/878,052.78 = 349,791.24/x
  3. Step 3: Cross multiply
    636,269.88x = 878,052.78 × 349,791.24
  4. Step 4: Simplify right side
    636,269.88x = 307,135,170,701.65
  5. Step 5: Solve for x
    x = 307,135,170,701.65/636,269.88
  6. Step 6: Final answer
    x = 482,712.10

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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.