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Finding the Fourth Proportional to 636,165.38, 877,898.39 and 349,679.31

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Solution

The fourth proportional to 636,165.38, 877,898.39 and 349,679.31 is: 482,552.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,165.38 : 877,898.39 = 349,679.31 : x
  2. Step 2: Convert to fraction form
    636,165.38/877,898.39 = 349,679.31/x
  3. Step 3: Cross multiply
    636,165.38x = 877,898.39 × 349,679.31
  4. Step 4: Simplify right side
    636,165.38x = 306,982,901,516.91
  5. Step 5: Solve for x
    x = 306,982,901,516.91/636,165.38
  6. Step 6: Final answer
    x = 482,552.04

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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.