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Finding the Fourth Proportional to 625,614.60, 863,349.30 and 339,133.80

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Solution

The fourth proportional to 625,614.60, 863,349.30 and 339,133.80 is: 468,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,614.60 : 863,349.30 = 339,133.80 : x
  2. Step 2: Convert to fraction form
    625,614.60/863,349.30 = 339,133.80/x
  3. Step 3: Cross multiply
    625,614.60x = 863,349.30 × 339,133.80
  4. Step 4: Simplify right side
    625,614.60x = 292,790,928,836.34
  5. Step 5: Solve for x
    x = 292,790,928,836.34/625,614.60
  6. Step 6: Final answer
    x = 468,005.27

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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.