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Finding the Third Proportional to 385,172 and 858,859

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Solution

The third proportional to 385,172 and 858,859 is: 1,915,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,172 : 858,859 = 858,859 : x
  2. Step 2: Convert to fraction form
    385,172/858,859 = 858,859/x
  3. Step 3: Cross multiply
    385,172x = 858,859 × 858,859
  4. Step 4: Simplify right side
    385,172x = 737,638,781,881
  5. Step 5: Solve for x
    x = 737,638,781,881/385,172
  6. Step 6: Final answer
    x = 1,915,089.32

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.