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Finding the Third Proportional to 418,927,991 and 888,921,420

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Solution

The third proportional to 418,927,991 and 888,921,420 is: 1,886,198,363.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,927,991 : 888,921,420 = 888,921,420 : x
  2. Step 2: Convert to fraction form
    418,927,991/888,921,420 = 888,921,420/x
  3. Step 3: Cross multiply
    418,927,991x = 888,921,420 × 888,921,420
  4. Step 4: Simplify right side
    418,927,991x = 790,181,290,934,816,384
  5. Step 5: Solve for x
    x = 790,181,290,934,816,384/418,927,991
  6. Step 6: Final answer
    x = 1,886,198,363.23

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.