Home / 724,395.60-1,086,593.40-668,408.40

Finding the Fourth Proportional to 724,395.60, 1,086,593.40 and 668,408.40

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Solution

The fourth proportional to 724,395.60, 1,086,593.40 and 668,408.40 is: 1,002,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,395.60 : 1,086,593.40 = 668,408.40 : x
  2. Step 2: Convert to fraction form
    724,395.60/1,086,593.40 = 668,408.40/x
  3. Step 3: Cross multiply
    724,395.60x = 1,086,593.40 × 668,408.40
  4. Step 4: Simplify right side
    724,395.60x = 726,288,155,944.56
  5. Step 5: Solve for x
    x = 726,288,155,944.56/724,395.60
  6. Step 6: Final answer
    x = 1,002,612.60

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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.