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Finding the Third Proportional to 8,430,534 and 18,188,172

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Solution

The third proportional to 8,430,534 and 18,188,172 is: 39,239,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430,534 : 18,188,172 = 18,188,172 : x
  2. Step 2: Convert to fraction form
    8,430,534/18,188,172 = 18,188,172/x
  3. Step 3: Cross multiply
    8,430,534x = 18,188,172 × 18,188,172
  4. Step 4: Simplify right side
    8,430,534x = 330,809,600,701,584
  5. Step 5: Solve for x
    x = 330,809,600,701,584/8,430,534
  6. Step 6: Final answer
    x = 39,239,459.88

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.