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Finding the Third Proportional to 9,172,992 and 21,420,480

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Solution

The third proportional to 9,172,992 and 21,420,480 is: 50,020,425.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172,992 : 21,420,480 = 21,420,480 : x
  2. Step 2: Convert to fraction form
    9,172,992/21,420,480 = 21,420,480/x
  3. Step 3: Cross multiply
    9,172,992x = 21,420,480 × 21,420,480
  4. Step 4: Simplify right side
    9,172,992x = 458,836,963,430,400
  5. Step 5: Solve for x
    x = 458,836,963,430,400/9,172,992
  6. Step 6: Final answer
    x = 50,020,425.55

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.