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Finding the Fourth Proportional to 663,791.60, 916,086.84 and 377,401.52

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Solution

The fourth proportional to 663,791.60, 916,086.84 and 377,401.52 is: 520,845.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,791.60 : 916,086.84 = 377,401.52 : x
  2. Step 2: Convert to fraction form
    663,791.60/916,086.84 = 377,401.52/x
  3. Step 3: Cross multiply
    663,791.60x = 916,086.84 × 377,401.52
  4. Step 4: Simplify right side
    663,791.60x = 345,732,565,868.00
  5. Step 5: Solve for x
    x = 345,732,565,868.00/663,791.60
  6. Step 6: Final answer
    x = 520,845.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.