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Finding the Third Proportional to 1,989,808.88 and 3,155,847.75

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Solution

The third proportional to 1,989,808.88 and 3,155,847.75 is: 5,005,191.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,808.88 : 3,155,847.75 = 3,155,847.75 : x
  2. Step 2: Convert to fraction form
    1,989,808.88/3,155,847.75 = 3,155,847.75/x
  3. Step 3: Cross multiply
    1,989,808.88x = 3,155,847.75 × 3,155,847.75
  4. Step 4: Simplify right side
    1,989,808.88x = 9,959,375,021,180.06
  5. Step 5: Solve for x
    x = 9,959,375,021,180.06/1,989,808.88
  6. Step 6: Final answer
    x = 5,005,191.78

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.