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Finding the Fourth Proportional to 636,374.28, 878,174.02 and 349,892.16

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Solution

The fourth proportional to 636,374.28, 878,174.02 and 349,892.16 is: 482,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,374.28 : 878,174.02 = 349,892.16 : x
  2. Step 2: Convert to fraction form
    636,374.28/878,174.02 = 349,892.16/x
  3. Step 3: Cross multiply
    636,374.28x = 878,174.02 × 349,892.16
  4. Step 4: Simplify right side
    636,374.28x = 307,266,204,713.68
  5. Step 5: Solve for x
    x = 307,266,204,713.68/636,374.28
  6. Step 6: Final answer
    x = 482,838.82

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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.