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Finding the Fourth Proportional to 591,720.80, 887,581.20 and 259,944.80

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Solution

The fourth proportional to 591,720.80, 887,581.20 and 259,944.80 is: 389,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,720.80 : 887,581.20 = 259,944.80 : x
  2. Step 2: Convert to fraction form
    591,720.80/887,581.20 = 259,944.80/x
  3. Step 3: Cross multiply
    591,720.80x = 887,581.20 × 259,944.80
  4. Step 4: Simplify right side
    591,720.80x = 230,722,117,517.76
  5. Step 5: Solve for x
    x = 230,722,117,517.76/591,720.80
  6. Step 6: Final answer
    x = 389,917.20

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Double scale
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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.