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Finding the Fourth Proportional to 625,559.72, 863,272.80 and 339,079.82

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Solution

The fourth proportional to 625,559.72, 863,272.80 and 339,079.82 is: 467,930.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,559.72 : 863,272.80 = 339,079.82 : x
  2. Step 2: Convert to fraction form
    625,559.72/863,272.80 = 339,079.82/x
  3. Step 3: Cross multiply
    625,559.72x = 863,272.80 × 339,079.82
  4. Step 4: Simplify right side
    625,559.72x = 292,718,381,318.53
  5. Step 5: Solve for x
    x = 292,718,381,318.53/625,559.72
  6. Step 6: Final answer
    x = 467,930.36

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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.