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Finding the Third Proportional to 393,768 and 605,988

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Solution

The third proportional to 393,768 and 605,988 is: 932,583.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,768 : 605,988 = 605,988 : x
  2. Step 2: Convert to fraction form
    393,768/605,988 = 605,988/x
  3. Step 3: Cross multiply
    393,768x = 605,988 × 605,988
  4. Step 4: Simplify right side
    393,768x = 367,221,456,144
  5. Step 5: Solve for x
    x = 367,221,456,144/393,768
  6. Step 6: Final answer
    x = 932,583.29

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.