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Finding the Fourth Proportional to 625,312.10, 862,933.70 and 338,832.72

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Solution

The fourth proportional to 625,312.10, 862,933.70 and 338,832.72 is: 467,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,312.10 : 862,933.70 = 338,832.72 : x
  2. Step 2: Convert to fraction form
    625,312.10/862,933.70 = 338,832.72/x
  3. Step 3: Cross multiply
    625,312.10x = 862,933.70 × 338,832.72
  4. Step 4: Simplify right side
    625,312.10x = 292,390,173,597.75
  5. Step 5: Solve for x
    x = 292,390,173,597.75/625,312.10
  6. Step 6: Final answer
    x = 467,590.78

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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.