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Finding the Fourth Proportional to 664,311.70, 996,467.55 and 365,713.30

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Solution

The fourth proportional to 664,311.70, 996,467.55 and 365,713.30 is: 548,569.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,311.70 : 996,467.55 = 365,713.30 : x
  2. Step 2: Convert to fraction form
    664,311.70/996,467.55 = 365,713.30/x
  3. Step 3: Cross multiply
    664,311.70x = 996,467.55 × 365,713.30
  4. Step 4: Simplify right side
    664,311.70x = 364,421,436,053.42
  5. Step 5: Solve for x
    x = 364,421,436,053.42/664,311.70
  6. Step 6: Final answer
    x = 548,569.95

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Double scale
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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.