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Finding the Third Proportional to 127,795,978 and 279,918,364

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Solution

The third proportional to 127,795,978 and 279,918,364 is: 613,120,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,795,978 : 279,918,364 = 279,918,364 : x
  2. Step 2: Convert to fraction form
    127,795,978/279,918,364 = 279,918,364/x
  3. Step 3: Cross multiply
    127,795,978x = 279,918,364 × 279,918,364
  4. Step 4: Simplify right side
    127,795,978x = 78,354,290,504,436,496
  5. Step 5: Solve for x
    x = 78,354,290,504,436,496/127,795,978
  6. Step 6: Final answer
    x = 613,120,160.20

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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.