Home / 724,459.20-1,087,725.60-409,531.20

Finding the Fourth Proportional to 724,459.20, 1,087,725.60 and 409,531.20

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Solution

The fourth proportional to 724,459.20, 1,087,725.60 and 409,531.20 is: 614,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,459.20 : 1,087,725.60 = 409,531.20 : x
  2. Step 2: Convert to fraction form
    724,459.20/1,087,725.60 = 409,531.20/x
  3. Step 3: Cross multiply
    724,459.20x = 1,087,725.60 × 409,531.20
  4. Step 4: Simplify right side
    724,459.20x = 445,457,570,238.72
  5. Step 5: Solve for x
    x = 445,457,570,238.72/724,459.20
  6. Step 6: Final answer
    x = 614,882.90

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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.