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Finding the Fourth Proportional to 445,501.20, 668,251.80 and 400,400.40

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Solution

The fourth proportional to 445,501.20, 668,251.80 and 400,400.40 is: 600,600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,501.20 : 668,251.80 = 400,400.40 : x
  2. Step 2: Convert to fraction form
    445,501.20/668,251.80 = 400,400.40/x
  3. Step 3: Cross multiply
    445,501.20x = 668,251.80 × 400,400.40
  4. Step 4: Simplify right side
    445,501.20x = 267,568,288,020.72
  5. Step 5: Solve for x
    x = 267,568,288,020.72/445,501.20
  6. Step 6: Final answer
    x = 600,600.60

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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.