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Finding the Third Proportional to 4,523,890 and 9,860,678

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Solution

The third proportional to 4,523,890 and 9,860,678 is: 21,493,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,523,890 : 9,860,678 = 9,860,678 : x
  2. Step 2: Convert to fraction form
    4,523,890/9,860,678 = 9,860,678/x
  3. Step 3: Cross multiply
    4,523,890x = 9,860,678 × 9,860,678
  4. Step 4: Simplify right side
    4,523,890x = 97,232,970,619,684
  5. Step 5: Solve for x
    x = 97,232,970,619,684/4,523,890
  6. Step 6: Final answer
    x = 21,493,221.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.