Home / 1,321,146,087.80-1,981,719,131.70-885,789,620.60

Finding the Fourth Proportional to 1,321,146,087.80, 1,981,719,131.70 and 885,789,620.60

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Solution

The fourth proportional to 1,321,146,087.80, 1,981,719,131.70 and 885,789,620.60 is: 1,328,684,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,146,087.80 : 1,981,719,131.70 = 885,789,620.60 : x
  2. Step 2: Convert to fraction form
    1,321,146,087.80/1,981,719,131.70 = 885,789,620.60/x
  3. Step 3: Cross multiply
    1,321,146,087.80x = 1,981,719,131.70 × 885,789,620.60
  4. Step 4: Simplify right side
    1,321,146,087.80x = 1,755,386,237,804,304,640
  5. Step 5: Solve for x
    x = 1,755,386,237,804,304,640/1,321,146,087.80
  6. Step 6: Final answer
    x = 1,328,684,430.90

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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.