Home / 724,816.60-1,087,224.90-455,378.20

Finding the Fourth Proportional to 724,816.60, 1,087,224.90 and 455,378.20

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Solution

The fourth proportional to 724,816.60, 1,087,224.90 and 455,378.20 is: 683,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,816.60 : 1,087,224.90 = 455,378.20 : x
  2. Step 2: Convert to fraction form
    724,816.60/1,087,224.90 = 455,378.20/x
  3. Step 3: Cross multiply
    724,816.60x = 1,087,224.90 × 455,378.20
  4. Step 4: Simplify right side
    724,816.60x = 495,098,517,957.18
  5. Step 5: Solve for x
    x = 495,098,517,957.18/724,816.60
  6. Step 6: Final answer
    x = 683,067.30

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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.