Home / 664,469,332.80-996,703,999.20-392,371,540.80

Finding the Fourth Proportional to 664,469,332.80, 996,703,999.20 and 392,371,540.80

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Solution

The fourth proportional to 664,469,332.80, 996,703,999.20 and 392,371,540.80 is: 588,557,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,469,332.80 : 996,703,999.20 = 392,371,540.80 : x
  2. Step 2: Convert to fraction form
    664,469,332.80/996,703,999.20 = 392,371,540.80/x
  3. Step 3: Cross multiply
    664,469,332.80x = 996,703,999.20 × 392,371,540.80
  4. Step 4: Simplify right side
    664,469,332.80x = 391,078,283,887,625,984
  5. Step 5: Solve for x
    x = 391,078,283,887,625,984/664,469,332.80
  6. Step 6: Final answer
    x = 588,557,311.20

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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.