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Finding the Third Proportional to 489,508 and 715,470

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Solution

The third proportional to 489,508 and 715,470 is: 1,045,738.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,508 : 715,470 = 715,470 : x
  2. Step 2: Convert to fraction form
    489,508/715,470 = 715,470/x
  3. Step 3: Cross multiply
    489,508x = 715,470 × 715,470
  4. Step 4: Simplify right side
    489,508x = 511,897,320,900
  5. Step 5: Solve for x
    x = 511,897,320,900/489,508
  6. Step 6: Final answer
    x = 1,045,738.42

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.