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Finding the Fourth Proportional to 625,404.38, 862,740.92 and 395,574.56

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Solution

The fourth proportional to 625,404.38, 862,740.92 and 395,574.56 is: 545,692.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,404.38 : 862,740.92 = 395,574.56 : x
  2. Step 2: Convert to fraction form
    625,404.38/862,740.92 = 395,574.56/x
  3. Step 3: Cross multiply
    625,404.38x = 862,740.92 × 395,574.56
  4. Step 4: Simplify right side
    625,404.38x = 341,278,359,823.00
  5. Step 5: Solve for x
    x = 341,278,359,823.00/625,404.38
  6. Step 6: Final answer
    x = 545,692.31

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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.