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Finding the Fourth Proportional to 621,757.14, 857,963.61 and 349,819.04

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Solution

The fourth proportional to 621,757.14, 857,963.61 and 349,819.04 is: 482,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,757.14 : 857,963.61 = 349,819.04 : x
  2. Step 2: Convert to fraction form
    621,757.14/857,963.61 = 349,819.04/x
  3. Step 3: Cross multiply
    621,757.14x = 857,963.61 × 349,819.04
  4. Step 4: Simplify right side
    621,757.14x = 300,132,002,115.32
  5. Step 5: Solve for x
    x = 300,132,002,115.32/621,757.14
  6. Step 6: Final answer
    x = 482,715.81

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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.