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Finding the Third Proportional to 387,987 and 848,118

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Solution

The third proportional to 387,987 and 848,118 is: 1,853,938.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,987 : 848,118 = 848,118 : x
  2. Step 2: Convert to fraction form
    387,987/848,118 = 848,118/x
  3. Step 3: Cross multiply
    387,987x = 848,118 × 848,118
  4. Step 4: Simplify right side
    387,987x = 719,304,141,924
  5. Step 5: Solve for x
    x = 719,304,141,924/387,987
  6. Step 6: Final answer
    x = 1,853,938.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.