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Finding the Fourth Proportional to 454,414.60, 681,621.90 and 321,704.20

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Solution

The fourth proportional to 454,414.60, 681,621.90 and 321,704.20 is: 482,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,414.60 : 681,621.90 = 321,704.20 : x
  2. Step 2: Convert to fraction form
    454,414.60/681,621.90 = 321,704.20/x
  3. Step 3: Cross multiply
    454,414.60x = 681,621.90 × 321,704.20
  4. Step 4: Simplify right side
    454,414.60x = 219,280,628,041.98
  5. Step 5: Solve for x
    x = 219,280,628,041.98/454,414.60
  6. Step 6: Final answer
    x = 482,556.30

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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.