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Finding the Fourth Proportional to 636,876.45, 878,891.10 and 350,414.37

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Solution

The fourth proportional to 636,876.45, 878,891.10 and 350,414.37 is: 483,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,876.45 : 878,891.10 = 350,414.37 : x
  2. Step 2: Convert to fraction form
    636,876.45/878,891.10 = 350,414.37/x
  3. Step 3: Cross multiply
    636,876.45x = 878,891.10 × 350,414.37
  4. Step 4: Simplify right side
    636,876.45x = 307,976,071,105.11
  5. Step 5: Solve for x
    x = 307,976,071,105.11/636,876.45
  6. Step 6: Final answer
    x = 483,572.71

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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.