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Finding the Third Proportional to 454,972.50 and 990,618.75

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Solution

The third proportional to 454,972.50 and 990,618.75 is: 2,156,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,972.50 : 990,618.75 = 990,618.75 : x
  2. Step 2: Convert to fraction form
    454,972.50/990,618.75 = 990,618.75/x
  3. Step 3: Cross multiply
    454,972.50x = 990,618.75 × 990,618.75
  4. Step 4: Simplify right side
    454,972.50x = 981,325,507,851.56
  5. Step 5: Solve for x
    x = 981,325,507,851.56/454,972.50
  6. Step 6: Final answer
    x = 2,156,889.72

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.