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Finding the Fourth Proportional to 636,257.93, 878,052.71 and 349,785.23

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Solution

The fourth proportional to 636,257.93, 878,052.71 and 349,785.23 is: 482,712.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,257.93 : 878,052.71 = 349,785.23 : x
  2. Step 2: Convert to fraction form
    636,257.93/878,052.71 = 349,785.23/x
  3. Step 3: Cross multiply
    636,257.93x = 878,052.71 × 349,785.23
  4. Step 4: Simplify right side
    636,257.93x = 307,129,867,370.55
  5. Step 5: Solve for x
    x = 307,129,867,370.55/636,257.93
  6. Step 6: Final answer
    x = 482,712.83

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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.