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Finding the Third Proportional to 3,899,481.75 and 8,415,503.86

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Solution

The third proportional to 3,899,481.75 and 8,415,503.86 is: 18,161,568.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899,481.75 : 8,415,503.86 = 8,415,503.86 : x
  2. Step 2: Convert to fraction form
    3,899,481.75/8,415,503.86 = 8,415,503.86/x
  3. Step 3: Cross multiply
    3,899,481.75x = 8,415,503.86 × 8,415,503.86
  4. Step 4: Simplify right side
    3,899,481.75x = 70,820,705,207,155.52
  5. Step 5: Solve for x
    x = 70,820,705,207,155.52/3,899,481.75
  6. Step 6: Final answer
    x = 18,161,568.57

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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.