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Finding the Third Proportional to 618,445 and 1,330,380

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Solution

The third proportional to 618,445 and 1,330,380 is: 2,861,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,445 : 1,330,380 = 1,330,380 : x
  2. Step 2: Convert to fraction form
    618,445/1,330,380 = 1,330,380/x
  3. Step 3: Cross multiply
    618,445x = 1,330,380 × 1,330,380
  4. Step 4: Simplify right side
    618,445x = 1,769,910,944,400
  5. Step 5: Solve for x
    x = 1,769,910,944,400/618,445
  6. Step 6: Final answer
    x = 2,861,872.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.