Home / 481,245.20-721,867.80-439,254.80

Finding the Fourth Proportional to 481,245.20, 721,867.80 and 439,254.80

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Solution

The fourth proportional to 481,245.20, 721,867.80 and 439,254.80 is: 658,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,245.20 : 721,867.80 = 439,254.80 : x
  2. Step 2: Convert to fraction form
    481,245.20/721,867.80 = 439,254.80/x
  3. Step 3: Cross multiply
    481,245.20x = 721,867.80 × 439,254.80
  4. Step 4: Simplify right side
    481,245.20x = 317,083,896,115.44
  5. Step 5: Solve for x
    x = 317,083,896,115.44/481,245.20
  6. Step 6: Final answer
    x = 658,882.20

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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.