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Finding the Fourth Proportional to 625,156.72, 862,714.12 and 338,676.56

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Solution

The fourth proportional to 625,156.72, 862,714.12 and 338,676.56 is: 467,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,156.72 : 862,714.12 = 338,676.56 : x
  2. Step 2: Convert to fraction form
    625,156.72/862,714.12 = 338,676.56/x
  3. Step 3: Cross multiply
    625,156.72x = 862,714.12 × 338,676.56
  4. Step 4: Simplify right side
    625,156.72x = 292,181,050,425.03
  5. Step 5: Solve for x
    x = 292,181,050,425.03/625,156.72
  6. Step 6: Final answer
    x = 467,372.49

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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.