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Finding the Third Proportional to 399,000 and 853,296

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Solution

The third proportional to 399,000 and 853,296 is: 1,824,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,000 : 853,296 = 853,296 : x
  2. Step 2: Convert to fraction form
    399,000/853,296 = 853,296/x
  3. Step 3: Cross multiply
    399,000x = 853,296 × 853,296
  4. Step 4: Simplify right side
    399,000x = 728,114,063,616
  5. Step 5: Solve for x
    x = 728,114,063,616/399,000
  6. Step 6: Final answer
    x = 1,824,847.28

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.