Home / 481,242.20-721,863.30-439,251.80

Finding the Fourth Proportional to 481,242.20, 721,863.30 and 439,251.80

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Solution

The fourth proportional to 481,242.20, 721,863.30 and 439,251.80 is: 658,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,242.20 : 721,863.30 = 439,251.80 : x
  2. Step 2: Convert to fraction form
    481,242.20/721,863.30 = 439,251.80/x
  3. Step 3: Cross multiply
    481,242.20x = 721,863.30 × 439,251.80
  4. Step 4: Simplify right side
    481,242.20x = 317,079,753,878.94
  5. Step 5: Solve for x
    x = 317,079,753,878.94/481,242.20
  6. Step 6: Final answer
    x = 658,877.70

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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.