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Finding the Third Proportional to 554,910 and 858,725

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Solution

The third proportional to 554,910 and 858,725 is: 1,328,879.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,910 : 858,725 = 858,725 : x
  2. Step 2: Convert to fraction form
    554,910/858,725 = 858,725/x
  3. Step 3: Cross multiply
    554,910x = 858,725 × 858,725
  4. Step 4: Simplify right side
    554,910x = 737,408,625,625
  5. Step 5: Solve for x
    x = 737,408,625,625/554,910
  6. Step 6: Final answer
    x = 1,328,879.68

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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.