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Finding the Third Proportional to 395,111 and 627,659

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Solution

The third proportional to 395,111 and 627,659 is: 997,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,111 : 627,659 = 627,659 : x
  2. Step 2: Convert to fraction form
    395,111/627,659 = 627,659/x
  3. Step 3: Cross multiply
    395,111x = 627,659 × 627,659
  4. Step 4: Simplify right side
    395,111x = 393,955,820,281
  5. Step 5: Solve for x
    x = 393,955,820,281/395,111
  6. Step 6: Final answer
    x = 997,076.32

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.