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Finding the Third Proportional to 638,730 and 1,001,979

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Solution

The third proportional to 638,730 and 1,001,979 is: 1,571,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,730 : 1,001,979 = 1,001,979 : x
  2. Step 2: Convert to fraction form
    638,730/1,001,979 = 1,001,979/x
  3. Step 3: Cross multiply
    638,730x = 1,001,979 × 1,001,979
  4. Step 4: Simplify right side
    638,730x = 1,003,961,916,441
  5. Step 5: Solve for x
    x = 1,003,961,916,441/638,730
  6. Step 6: Final answer
    x = 1,571,809.55

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.