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Finding the Fourth Proportional to 625,071.81, 862,603.24 and 338,591.89

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Solution

The fourth proportional to 625,071.81, 862,603.24 and 338,591.89 is: 467,259.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,071.81 : 862,603.24 = 338,591.89 : x
  2. Step 2: Convert to fraction form
    625,071.81/862,603.24 = 338,591.89/x
  3. Step 3: Cross multiply
    625,071.81x = 862,603.24 × 338,591.89
  4. Step 4: Simplify right side
    625,071.81x = 292,070,461,351.72
  5. Step 5: Solve for x
    x = 292,070,461,351.72/625,071.81
  6. Step 6: Final answer
    x = 467,259.05

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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.