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Finding the Fourth Proportional to 800,002.55, 1,200,005.04 and 326,687.96

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Solution

The fourth proportional to 800,002.55, 1,200,005.04 and 326,687.96 is: 490,032.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,002.55 : 1,200,005.04 = 326,687.96 : x
  2. Step 2: Convert to fraction form
    800,002.55/1,200,005.04 = 326,687.96/x
  3. Step 3: Cross multiply
    800,002.55x = 1,200,005.04 × 326,687.96
  4. Step 4: Simplify right side
    800,002.55x = 392,027,198,507.32
  5. Step 5: Solve for x
    x = 392,027,198,507.32/800,002.55
  6. Step 6: Final answer
    x = 490,032.44

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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.