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Finding the Third Proportional to 8,478,978 and 18,394,272

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Solution

The third proportional to 8,478,978 and 18,394,272 is: 39,904,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478,978 : 18,394,272 = 18,394,272 : x
  2. Step 2: Convert to fraction form
    8,478,978/18,394,272 = 18,394,272/x
  3. Step 3: Cross multiply
    8,478,978x = 18,394,272 × 18,394,272
  4. Step 4: Simplify right side
    8,478,978x = 338,349,242,409,984
  5. Step 5: Solve for x
    x = 338,349,242,409,984/8,478,978
  6. Step 6: Final answer
    x = 39,904,484.06

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.