Home / 391,305,605.40-587,190,651.30-148,993,003.80

Finding the Fourth Proportional to 391,305,605.40, 587,190,651.30 and 148,993,003.80

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Solution

The fourth proportional to 391,305,605.40, 587,190,651.30 and 148,993,003.80 is: 223,577,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,305,605.40 : 587,190,651.30 = 148,993,003.80 : x
  2. Step 2: Convert to fraction form
    391,305,605.40/587,190,651.30 = 148,993,003.80/x
  3. Step 3: Cross multiply
    391,305,605.40x = 587,190,651.30 × 148,993,003.80
  4. Step 4: Simplify right side
    391,305,605.40x = 87,487,298,940,465,376
  5. Step 5: Solve for x
    x = 87,487,298,940,465,376/391,305,605.40
  6. Step 6: Final answer
    x = 223,577,934.31

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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.