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Finding the Fourth Proportional to 624,614.60, 936,781.50 and 287,331.42

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Solution

The fourth proportional to 624,614.60, 936,781.50 and 287,331.42 is: 430,932.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,614.60 : 936,781.50 = 287,331.42 : x
  2. Step 2: Convert to fraction form
    624,614.60/936,781.50 = 287,331.42/x
  3. Step 3: Cross multiply
    624,614.60x = 936,781.50 × 287,331.42
  4. Step 4: Simplify right side
    624,614.60x = 269,166,758,624.73
  5. Step 5: Solve for x
    x = 269,166,758,624.73/624,614.60
  6. Step 6: Final answer
    x = 430,932.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.