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Finding the Third Proportional to 3,908,259.56 and 8,489,311.88

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Solution

The third proportional to 3,908,259.56 and 8,489,311.88 is: 18,440,028.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908,259.56 : 8,489,311.88 = 8,489,311.88 : x
  2. Step 2: Convert to fraction form
    3,908,259.56/8,489,311.88 = 8,489,311.88/x
  3. Step 3: Cross multiply
    3,908,259.56x = 8,489,311.88 × 8,489,311.88
  4. Step 4: Simplify right side
    3,908,259.56x = 72,068,416,111,016.02
  5. Step 5: Solve for x
    x = 72,068,416,111,016.02/3,908,259.56
  6. Step 6: Final answer
    x = 18,440,028.09

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.