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Finding the Third Proportional to 778,865 and 1,682,287

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Solution

The third proportional to 778,865 and 1,682,287 is: 3,633,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,865 : 1,682,287 = 1,682,287 : x
  2. Step 2: Convert to fraction form
    778,865/1,682,287 = 1,682,287/x
  3. Step 3: Cross multiply
    778,865x = 1,682,287 × 1,682,287
  4. Step 4: Simplify right side
    778,865x = 2,830,089,550,369
  5. Step 5: Solve for x
    x = 2,830,089,550,369/778,865
  6. Step 6: Final answer
    x = 3,633,607.30

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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.