Home / 1,289,067,898.72-1,929,747,819.42-789,505,449.08

Finding the Fourth Proportional to 1,289,067,898.72, 1,929,747,819.42 and 789,505,449.08

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Solution

The fourth proportional to 1,289,067,898.72, 1,929,747,819.42 and 789,505,449.08 is: 1,181,897,726.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,067,898.72 : 1,929,747,819.42 = 789,505,449.08 : x
  2. Step 2: Convert to fraction form
    1,289,067,898.72/1,929,747,819.42 = 789,505,449.08/x
  3. Step 3: Cross multiply
    1,289,067,898.72x = 1,929,747,819.42 × 789,505,449.08
  4. Step 4: Simplify right side
    1,289,067,898.72x = 1,523,546,418,782,338,048
  5. Step 5: Solve for x
    x = 1,523,546,418,782,338,048/1,289,067,898.72
  6. Step 6: Final answer
    x = 1,181,897,726.49

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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.