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Finding the Third Proportional to 8,640,980 and 18,909,352

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Solution

The third proportional to 8,640,980 and 18,909,352 is: 41,379,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640,980 : 18,909,352 = 18,909,352 : x
  2. Step 2: Convert to fraction form
    8,640,980/18,909,352 = 18,909,352/x
  3. Step 3: Cross multiply
    8,640,980x = 18,909,352 × 18,909,352
  4. Step 4: Simplify right side
    8,640,980x = 357,563,593,059,904
  5. Step 5: Solve for x
    x = 357,563,593,059,904/8,640,980
  6. Step 6: Final answer
    x = 41,379,981.56

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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.