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Finding the Fourth Proportional to 800,439.75, 1,200,660.03 and 327,124.62

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Solution

The fourth proportional to 800,439.75, 1,200,660.03 and 327,124.62 is: 490,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,439.75 : 1,200,660.03 = 327,124.62 : x
  2. Step 2: Convert to fraction form
    800,439.75/1,200,660.03 = 327,124.62/x
  3. Step 3: Cross multiply
    800,439.75x = 1,200,660.03 × 327,124.62
  4. Step 4: Simplify right side
    800,439.75x = 392,765,456,062.94
  5. Step 5: Solve for x
    x = 392,765,456,062.94/800,439.75
  6. Step 6: Final answer
    x = 490,687.10

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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.