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Finding the Fourth Proportional to 663,837, 996,749.37 and 379,847.76

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Solution

The fourth proportional to 663,837, 996,749.37 and 379,847.76 is: 570,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,837 : 996,749.37 = 379,847.76 : x
  2. Step 2: Convert to fraction form
    663,837/996,749.37 = 379,847.76/x
  3. Step 3: Cross multiply
    663,837x = 996,749.37 × 379,847.76
  4. Step 4: Simplify right side
    663,837x = 378,613,015,475.91
  5. Step 5: Solve for x
    x = 378,613,015,475.91/663,837
  6. Step 6: Final answer
    x = 570,340.33

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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.