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Finding the Fourth Proportional to 481,247.20, 721,870.80 and 439,256.80

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Solution

The fourth proportional to 481,247.20, 721,870.80 and 439,256.80 is: 658,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,247.20 : 721,870.80 = 439,256.80 : x
  2. Step 2: Convert to fraction form
    481,247.20/721,870.80 = 439,256.80/x
  3. Step 3: Cross multiply
    481,247.20x = 721,870.80 × 439,256.80
  4. Step 4: Simplify right side
    481,247.20x = 317,086,657,621.44
  5. Step 5: Solve for x
    x = 317,086,657,621.44/481,247.20
  6. Step 6: Final answer
    x = 658,885.20

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Similar ratio
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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.