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Finding the Third Proportional to 788,640 and 1,212,208

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Solution

The third proportional to 788,640 and 1,212,208 is: 1,863,268.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,640 : 1,212,208 = 1,212,208 : x
  2. Step 2: Convert to fraction form
    788,640/1,212,208 = 1,212,208/x
  3. Step 3: Cross multiply
    788,640x = 1,212,208 × 1,212,208
  4. Step 4: Simplify right side
    788,640x = 1,469,448,235,264
  5. Step 5: Solve for x
    x = 1,469,448,235,264/788,640
  6. Step 6: Final answer
    x = 1,863,268.71

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.