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Finding the Third Proportional to 398,868 and 860,352

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Solution

The third proportional to 398,868 and 860,352 is: 1,855,765.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,868 : 860,352 = 860,352 : x
  2. Step 2: Convert to fraction form
    398,868/860,352 = 860,352/x
  3. Step 3: Cross multiply
    398,868x = 860,352 × 860,352
  4. Step 4: Simplify right side
    398,868x = 740,205,563,904
  5. Step 5: Solve for x
    x = 740,205,563,904/398,868
  6. Step 6: Final answer
    x = 1,855,765.73

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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.