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Finding the Fourth Proportional to 625,164.88, 862,722.75 and 338,682.91

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Solution

The fourth proportional to 625,164.88, 862,722.75 and 338,682.91 is: 467,379.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,164.88 : 862,722.75 = 338,682.91 : x
  2. Step 2: Convert to fraction form
    625,164.88/862,722.75 = 338,682.91/x
  3. Step 3: Cross multiply
    625,164.88x = 862,722.75 × 338,682.91
  4. Step 4: Simplify right side
    625,164.88x = 292,189,451,493.20
  5. Step 5: Solve for x
    x = 292,189,451,493.20/625,164.88
  6. Step 6: Final answer
    x = 467,379.82

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1.5x scale

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.