Home / 481,207.60-721,811.40-256,481.20

Finding the Fourth Proportional to 481,207.60, 721,811.40 and 256,481.20

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Solution

The fourth proportional to 481,207.60, 721,811.40 and 256,481.20 is: 384,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,207.60 : 721,811.40 = 256,481.20 : x
  2. Step 2: Convert to fraction form
    481,207.60/721,811.40 = 256,481.20/x
  3. Step 3: Cross multiply
    481,207.60x = 721,811.40 × 256,481.20
  4. Step 4: Simplify right side
    481,207.60x = 185,131,054,045.68
  5. Step 5: Solve for x
    x = 185,131,054,045.68/481,207.60
  6. Step 6: Final answer
    x = 384,721.80

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Similar ratio
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1.5x scale

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.