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Finding the Third Proportional to 9,789,478 and 20,996,132

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Solution

The third proportional to 9,789,478 and 20,996,132 is: 45,031,773.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789,478 : 20,996,132 = 20,996,132 : x
  2. Step 2: Convert to fraction form
    9,789,478/20,996,132 = 20,996,132/x
  3. Step 3: Cross multiply
    9,789,478x = 20,996,132 × 20,996,132
  4. Step 4: Simplify right side
    9,789,478x = 440,837,558,961,424
  5. Step 5: Solve for x
    x = 440,837,558,961,424/9,789,478
  6. Step 6: Final answer
    x = 45,031,773.80

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.