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Finding the Third Proportional to 812,726,786 and 1,780,722,918

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Solution

The third proportional to 812,726,786 and 1,780,722,918 is: 3,901,648,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,726,786 : 1,780,722,918 = 1,780,722,918 : x
  2. Step 2: Convert to fraction form
    812,726,786/1,780,722,918 = 1,780,722,918/x
  3. Step 3: Cross multiply
    812,726,786x = 1,780,722,918 × 1,780,722,918
  4. Step 4: Simplify right side
    812,726,786x = 3,170,974,110,690,434,560
  5. Step 5: Solve for x
    x = 3,170,974,110,690,434,560/812,726,786
  6. Step 6: Final answer
    x = 3,901,648,334.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.