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Finding the Fourth Proportional to 636,296.43, 878,095.03 and 349,818.56

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Solution

The fourth proportional to 636,296.43, 878,095.03 and 349,818.56 is: 482,752.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,296.43 : 878,095.03 = 349,818.56 : x
  2. Step 2: Convert to fraction form
    636,296.43/878,095.03 = 349,818.56/x
  3. Step 3: Cross multiply
    636,296.43x = 878,095.03 × 349,818.56
  4. Step 4: Simplify right side
    636,296.43x = 307,173,940,258.45
  5. Step 5: Solve for x
    x = 307,173,940,258.45/636,296.43
  6. Step 6: Final answer
    x = 482,752.89

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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.