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Finding the Fourth Proportional to 636,253.02, 878,045.94 and 349,780.32

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Solution

The fourth proportional to 636,253.02, 878,045.94 and 349,780.32 is: 482,706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,253.02 : 878,045.94 = 349,780.32 : x
  2. Step 2: Convert to fraction form
    636,253.02/878,045.94 = 349,780.32/x
  3. Step 3: Cross multiply
    636,253.02x = 878,045.94 × 349,780.32
  4. Step 4: Simplify right side
    636,253.02x = 307,123,189,867.90
  5. Step 5: Solve for x
    x = 307,123,189,867.90/636,253.02
  6. Step 6: Final answer
    x = 482,706.06

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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.