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Finding the Third Proportional to 391,607 and 605,852

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Solution

The third proportional to 391,607 and 605,852 is: 937,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,607 : 605,852 = 605,852 : x
  2. Step 2: Convert to fraction form
    391,607/605,852 = 605,852/x
  3. Step 3: Cross multiply
    391,607x = 605,852 × 605,852
  4. Step 4: Simplify right side
    391,607x = 367,056,645,904
  5. Step 5: Solve for x
    x = 367,056,645,904/391,607
  6. Step 6: Final answer
    x = 937,308.69

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.