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Finding the Third Proportional to 9,219,288 and 19,915,728

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Solution

The third proportional to 9,219,288 and 19,915,728 is: 43,022,435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219,288 : 19,915,728 = 19,915,728 : x
  2. Step 2: Convert to fraction form
    9,219,288/19,915,728 = 19,915,728/x
  3. Step 3: Cross multiply
    9,219,288x = 19,915,728 × 19,915,728
  4. Step 4: Simplify right side
    9,219,288x = 396,636,221,769,984
  5. Step 5: Solve for x
    x = 396,636,221,769,984/9,219,288
  6. Step 6: Final answer
    x = 43,022,435.33

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.