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Finding the Fourth Proportional to 527,464.80, 791,197.20 and 278,632.80

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Solution

The fourth proportional to 527,464.80, 791,197.20 and 278,632.80 is: 417,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,464.80 : 791,197.20 = 278,632.80 : x
  2. Step 2: Convert to fraction form
    527,464.80/791,197.20 = 278,632.80/x
  3. Step 3: Cross multiply
    527,464.80x = 791,197.20 × 278,632.80
  4. Step 4: Simplify right side
    527,464.80x = 220,453,491,188.16
  5. Step 5: Solve for x
    x = 220,453,491,188.16/527,464.80
  6. Step 6: Final answer
    x = 417,949.20

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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.