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Finding the Third Proportional to 457,218 and 679,202

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Solution

The third proportional to 457,218 and 679,202 is: 1,008,961.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,218 : 679,202 = 679,202 : x
  2. Step 2: Convert to fraction form
    457,218/679,202 = 679,202/x
  3. Step 3: Cross multiply
    457,218x = 679,202 × 679,202
  4. Step 4: Simplify right side
    457,218x = 461,315,356,804
  5. Step 5: Solve for x
    x = 461,315,356,804/457,218
  6. Step 6: Final answer
    x = 1,008,961.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.