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Finding the Third Proportional to 486,942,928 and 990,891,912

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Solution

The third proportional to 486,942,928 and 990,891,912 is: 2,016,389,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,942,928 : 990,891,912 = 990,891,912 : x
  2. Step 2: Convert to fraction form
    486,942,928/990,891,912 = 990,891,912/x
  3. Step 3: Cross multiply
    486,942,928x = 990,891,912 × 990,891,912
  4. Step 4: Simplify right side
    486,942,928x = 981,866,781,267,015,680
  5. Step 5: Solve for x
    x = 981,866,781,267,015,680/486,942,928
  6. Step 6: Final answer
    x = 2,016,389,857.64

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.