Home / 724,921.20-1,087,381.80-325,753.20

Finding the Fourth Proportional to 724,921.20, 1,087,381.80 and 325,753.20

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Solution

The fourth proportional to 724,921.20, 1,087,381.80 and 325,753.20 is: 488,629.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,921.20 : 1,087,381.80 = 325,753.20 : x
  2. Step 2: Convert to fraction form
    724,921.20/1,087,381.80 = 325,753.20/x
  3. Step 3: Cross multiply
    724,921.20x = 1,087,381.80 × 325,753.20
  4. Step 4: Simplify right side
    724,921.20x = 354,218,100,971.76
  5. Step 5: Solve for x
    x = 354,218,100,971.76/724,921.20
  6. Step 6: Final answer
    x = 488,629.80

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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.