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Finding the Fourth Proportional to 625,021.35, 862,529.71 and 338,540.55

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Solution

The fourth proportional to 625,021.35, 862,529.71 and 338,540.55 is: 467,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,021.35 : 862,529.71 = 338,540.55 : x
  2. Step 2: Convert to fraction form
    625,021.35/862,529.71 = 338,540.55/x
  3. Step 3: Cross multiply
    625,021.35x = 862,529.71 × 338,540.55
  4. Step 4: Simplify right side
    625,021.35x = 292,001,284,994.24
  5. Step 5: Solve for x
    x = 292,001,284,994.24/625,021.35
  6. Step 6: Final answer
    x = 467,186.10

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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.