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Finding the Fourth Proportional to 625,085.10, 862,617.39 and 338,605.11

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Solution

The fourth proportional to 625,085.10, 862,617.39 and 338,605.11 is: 467,275.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,085.10 : 862,617.39 = 338,605.11 : x
  2. Step 2: Convert to fraction form
    625,085.10/862,617.39 = 338,605.11/x
  3. Step 3: Cross multiply
    625,085.10x = 862,617.39 × 338,605.11
  4. Step 4: Simplify right side
    625,085.10x = 292,086,656,228.86
  5. Step 5: Solve for x
    x = 292,086,656,228.86/625,085.10
  6. Step 6: Final answer
    x = 467,275.03

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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.