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Finding the Third Proportional to 3,980,278.50 and 8,705,215.50

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Solution

The third proportional to 3,980,278.50 and 8,705,215.50 is: 19,039,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980,278.50 : 8,705,215.50 = 8,705,215.50 : x
  2. Step 2: Convert to fraction form
    3,980,278.50/8,705,215.50 = 8,705,215.50/x
  3. Step 3: Cross multiply
    3,980,278.50x = 8,705,215.50 × 8,705,215.50
  4. Step 4: Simplify right side
    3,980,278.50x = 75,780,776,901,440.25
  5. Step 5: Solve for x
    x = 75,780,776,901,440.25/3,980,278.50
  6. Step 6: Final answer
    x = 19,039,063.95

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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.