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Finding the Fourth Proportional to 664,577,678.60, 996,866,517.90 and 377,923,214.60

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Solution

The fourth proportional to 664,577,678.60, 996,866,517.90 and 377,923,214.60 is: 566,884,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,577,678.60 : 996,866,517.90 = 377,923,214.60 : x
  2. Step 2: Convert to fraction form
    664,577,678.60/996,866,517.90 = 377,923,214.60/x
  3. Step 3: Cross multiply
    664,577,678.60x = 996,866,517.90 × 377,923,214.60
  4. Step 4: Simplify right side
    664,577,678.60x = 376,738,998,971,876,480
  5. Step 5: Solve for x
    x = 376,738,998,971,876,480/664,577,678.60
  6. Step 6: Final answer
    x = 566,884,821.90

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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.