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Finding the Fourth Proportional to 664,278.80, 996,418.20 and 264,713.90

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Solution

The fourth proportional to 664,278.80, 996,418.20 and 264,713.90 is: 397,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,278.80 : 996,418.20 = 264,713.90 : x
  2. Step 2: Convert to fraction form
    664,278.80/996,418.20 = 264,713.90/x
  3. Step 3: Cross multiply
    664,278.80x = 996,418.20 × 264,713.90
  4. Step 4: Simplify right side
    664,278.80x = 263,765,747,752.98
  5. Step 5: Solve for x
    x = 263,765,747,752.98/664,278.80
  6. Step 6: Final answer
    x = 397,070.85

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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.