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Finding the Third Proportional to 367,078 and 778,220

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Solution

The third proportional to 367,078 and 778,220 is: 1,649,857.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,078 : 778,220 = 778,220 : x
  2. Step 2: Convert to fraction form
    367,078/778,220 = 778,220/x
  3. Step 3: Cross multiply
    367,078x = 778,220 × 778,220
  4. Step 4: Simplify right side
    367,078x = 605,626,368,400
  5. Step 5: Solve for x
    x = 605,626,368,400/367,078
  6. Step 6: Final answer
    x = 1,649,857.44

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.