Home / 724,189.20-1,087,320.60-409,261.20

Finding the Fourth Proportional to 724,189.20, 1,087,320.60 and 409,261.20

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Solution

The fourth proportional to 724,189.20, 1,087,320.60 and 409,261.20 is: 614,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,189.20 : 1,087,320.60 = 409,261.20 : x
  2. Step 2: Convert to fraction form
    724,189.20/1,087,320.60 = 409,261.20/x
  3. Step 3: Cross multiply
    724,189.20x = 1,087,320.60 × 409,261.20
  4. Step 4: Simplify right side
    724,189.20x = 444,998,133,540.72
  5. Step 5: Solve for x
    x = 444,998,133,540.72/724,189.20
  6. Step 6: Final answer
    x = 614,477.73

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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.