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Finding the Third Proportional to 9,272,976 and 19,917,120

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Solution

The third proportional to 9,272,976 and 19,917,120 is: 42,779,326.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272,976 : 19,917,120 = 19,917,120 : x
  2. Step 2: Convert to fraction form
    9,272,976/19,917,120 = 19,917,120/x
  3. Step 3: Cross multiply
    9,272,976x = 19,917,120 × 19,917,120
  4. Step 4: Simplify right side
    9,272,976x = 396,691,669,094,400
  5. Step 5: Solve for x
    x = 396,691,669,094,400/9,272,976
  6. Step 6: Final answer
    x = 42,779,326.63

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.