Home / 724,337.20-1,087,542.60-409,409.20

Finding the Fourth Proportional to 724,337.20, 1,087,542.60 and 409,409.20

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Solution

The fourth proportional to 724,337.20, 1,087,542.60 and 409,409.20 is: 614,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,337.20 : 1,087,542.60 = 409,409.20 : x
  2. Step 2: Convert to fraction form
    724,337.20/1,087,542.60 = 409,409.20/x
  3. Step 3: Cross multiply
    724,337.20x = 1,087,542.60 × 409,409.20
  4. Step 4: Simplify right side
    724,337.20x = 445,249,945,831.92
  5. Step 5: Solve for x
    x = 445,249,945,831.92/724,337.20
  6. Step 6: Final answer
    x = 614,699.82

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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.