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Finding the Third Proportional to 9,889,920 and 20,860,272

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Solution

The third proportional to 9,889,920 and 20,860,272 is: 43,999,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,889,920 : 20,860,272 = 20,860,272 : x
  2. Step 2: Convert to fraction form
    9,889,920/20,860,272 = 20,860,272/x
  3. Step 3: Cross multiply
    9,889,920x = 20,860,272 × 20,860,272
  4. Step 4: Simplify right side
    9,889,920x = 435,150,947,913,984
  5. Step 5: Solve for x
    x = 435,150,947,913,984/9,889,920
  6. Step 6: Final answer
    x = 43,999,440.63

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.