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Finding the Third Proportional to 3,928,378.50 and 8,587,215

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Solution

The third proportional to 3,928,378.50 and 8,587,215 is: 18,771,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928,378.50 : 8,587,215 = 8,587,215 : x
  2. Step 2: Convert to fraction form
    3,928,378.50/8,587,215 = 8,587,215/x
  3. Step 3: Cross multiply
    3,928,378.50x = 8,587,215 × 8,587,215
  4. Step 4: Simplify right side
    3,928,378.50x = 73,740,261,456,225
  5. Step 5: Solve for x
    x = 73,740,261,456,225/3,928,378.50
  6. Step 6: Final answer
    x = 18,771,170.21

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.