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Finding the Third Proportional to 361,317 and 778,130

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Solution

The third proportional to 361,317 and 778,130 is: 1,675,775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,317 : 778,130 = 778,130 : x
  2. Step 2: Convert to fraction form
    361,317/778,130 = 778,130/x
  3. Step 3: Cross multiply
    361,317x = 778,130 × 778,130
  4. Step 4: Simplify right side
    361,317x = 605,486,296,900
  5. Step 5: Solve for x
    x = 605,486,296,900/361,317
  6. Step 6: Final answer
    x = 1,675,775.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.