Home / 1,992,907,501.20-2,989,361,251.80-1,981,428,375.60

Finding the Fourth Proportional to 1,992,907,501.20, 2,989,361,251.80 and 1,981,428,375.60

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Solution

The fourth proportional to 1,992,907,501.20, 2,989,361,251.80 and 1,981,428,375.60 is: 2,972,142,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,907,501.20 : 2,989,361,251.80 = 1,981,428,375.60 : x
  2. Step 2: Convert to fraction form
    1,992,907,501.20/2,989,361,251.80 = 1,981,428,375.60/x
  3. Step 3: Cross multiply
    1,992,907,501.20x = 2,989,361,251.80 × 1,981,428,375.60
  4. Step 4: Simplify right side
    1,992,907,501.20x = 5,923,205,209,235,656,704
  5. Step 5: Solve for x
    x = 5,923,205,209,235,656,704/1,992,907,501.20
  6. Step 6: Final answer
    x = 2,972,142,563.40

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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.