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Finding the Third Proportional to 641,200 and 1,000,619

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Solution

The third proportional to 641,200 and 1,000,619 is: 1,561,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,200 : 1,000,619 = 1,000,619 : x
  2. Step 2: Convert to fraction form
    641,200/1,000,619 = 1,000,619/x
  3. Step 3: Cross multiply
    641,200x = 1,000,619 × 1,000,619
  4. Step 4: Simplify right side
    641,200x = 1,001,238,383,161
  5. Step 5: Solve for x
    x = 1,001,238,383,161/641,200
  6. Step 6: Final answer
    x = 1,561,507.15

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.