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Finding the Fourth Proportional to 636,325.96, 878,107.39 and 349,843.85

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Solution

The fourth proportional to 636,325.96, 878,107.39 and 349,843.85 is: 482,772.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,325.96 : 878,107.39 = 349,843.85 : x
  2. Step 2: Convert to fraction form
    636,325.96/878,107.39 = 349,843.85/x
  3. Step 3: Cross multiply
    636,325.96x = 878,107.39 × 349,843.85
  4. Step 4: Simplify right side
    636,325.96x = 307,200,470,031.05
  5. Step 5: Solve for x
    x = 307,200,470,031.05/636,325.96
  6. Step 6: Final answer
    x = 482,772.18

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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.