Home / 1,991,182,121.60-2,987,654,294.79-1,045,557,766.85

Finding the Fourth Proportional to 1,991,182,121.60, 2,987,654,294.79 and 1,045,557,766.85

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Solution

The fourth proportional to 1,991,182,121.60, 2,987,654,294.79 and 1,045,557,766.85 is: 1,568,799,317.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,182,121.60 : 2,987,654,294.79 = 1,045,557,766.85 : x
  2. Step 2: Convert to fraction form
    1,991,182,121.60/2,987,654,294.79 = 1,045,557,766.85/x
  3. Step 3: Cross multiply
    1,991,182,121.60x = 2,987,654,294.79 × 1,045,557,766.85
  4. Step 4: Simplify right side
    1,991,182,121.60x = 3,123,765,152,565,505,536
  5. Step 5: Solve for x
    x = 3,123,765,152,565,505,536/1,991,182,121.60
  6. Step 6: Final answer
    x = 1,568,799,317.09

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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.