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Finding the Fourth Proportional to 625,021.86, 862,530.40 and 338,541.06

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Solution

The fourth proportional to 625,021.86, 862,530.40 and 338,541.06 is: 467,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,021.86 : 862,530.40 = 338,541.06 : x
  2. Step 2: Convert to fraction form
    625,021.86/862,530.40 = 338,541.06/x
  3. Step 3: Cross multiply
    625,021.86x = 862,530.40 × 338,541.06
  4. Step 4: Simplify right side
    625,021.86x = 292,001,951,585.57
  5. Step 5: Solve for x
    x = 292,001,951,585.57/625,021.86
  6. Step 6: Final answer
    x = 467,186.79

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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.