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Finding the Third Proportional to 127,620,456 and 278,338,872

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Solution

The third proportional to 127,620,456 and 278,338,872 is: 607,054,151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,620,456 : 278,338,872 = 278,338,872 : x
  2. Step 2: Convert to fraction form
    127,620,456/278,338,872 = 278,338,872/x
  3. Step 3: Cross multiply
    127,620,456x = 278,338,872 × 278,338,872
  4. Step 4: Simplify right side
    127,620,456x = 77,472,527,666,232,384
  5. Step 5: Solve for x
    x = 77,472,527,666,232,384/127,620,456
  6. Step 6: Final answer
    x = 607,054,151.78

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.