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Finding the Third Proportional to 127,489,910 and 278,761,990

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Solution

The third proportional to 127,489,910 and 278,761,990 is: 609,524,683.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,489,910 : 278,761,990 = 278,761,990 : x
  2. Step 2: Convert to fraction form
    127,489,910/278,761,990 = 278,761,990/x
  3. Step 3: Cross multiply
    127,489,910x = 278,761,990 × 278,761,990
  4. Step 4: Simplify right side
    127,489,910x = 77,708,247,068,760,096
  5. Step 5: Solve for x
    x = 77,708,247,068,760,096/127,489,910
  6. Step 6: Final answer
    x = 609,524,683.71

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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.