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Finding the Third Proportional to 393,438 and 607,517

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Solution

The third proportional to 393,438 and 607,517 is: 938,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,438 : 607,517 = 607,517 : x
  2. Step 2: Convert to fraction form
    393,438/607,517 = 607,517/x
  3. Step 3: Cross multiply
    393,438x = 607,517 × 607,517
  4. Step 4: Simplify right side
    393,438x = 369,076,905,289
  5. Step 5: Solve for x
    x = 369,076,905,289/393,438
  6. Step 6: Final answer
    x = 938,081.49

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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.