Home / 1,981,719,229.20-2,972,578,843.80-1,328,684,528.40

Finding the Fourth Proportional to 1,981,719,229.20, 2,972,578,843.80 and 1,328,684,528.40

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Solution

The fourth proportional to 1,981,719,229.20, 2,972,578,843.80 and 1,328,684,528.40 is: 1,993,026,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,719,229.20 : 2,972,578,843.80 = 1,328,684,528.40 : x
  2. Step 2: Convert to fraction form
    1,981,719,229.20/2,972,578,843.80 = 1,328,684,528.40/x
  3. Step 3: Cross multiply
    1,981,719,229.20x = 2,972,578,843.80 × 1,328,684,528.40
  4. Step 4: Simplify right side
    1,981,719,229.20x = 3,949,619,519,206,220,800
  5. Step 5: Solve for x
    x = 3,949,619,519,206,220,800/1,981,719,229.20
  6. Step 6: Final answer
    x = 1,993,026,792.60

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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.