Home / 454,329.60-681,494.40-420,115.20

Finding the Fourth Proportional to 454,329.60, 681,494.40 and 420,115.20

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Solution

The fourth proportional to 454,329.60, 681,494.40 and 420,115.20 is: 630,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,329.60 : 681,494.40 = 420,115.20 : x
  2. Step 2: Convert to fraction form
    454,329.60/681,494.40 = 420,115.20/x
  3. Step 3: Cross multiply
    454,329.60x = 681,494.40 × 420,115.20
  4. Step 4: Simplify right side
    454,329.60x = 286,306,156,154.88
  5. Step 5: Solve for x
    x = 286,306,156,154.88/454,329.60
  6. Step 6: Final answer
    x = 630,172.80

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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.