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Finding the Third Proportional to 395,854 and 853,915

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Solution

The third proportional to 395,854 and 853,915 is: 1,842,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,854 : 853,915 = 853,915 : x
  2. Step 2: Convert to fraction form
    395,854/853,915 = 853,915/x
  3. Step 3: Cross multiply
    395,854x = 853,915 × 853,915
  4. Step 4: Simplify right side
    395,854x = 729,170,827,225
  5. Step 5: Solve for x
    x = 729,170,827,225/395,854
  6. Step 6: Final answer
    x = 1,842,019.60

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.