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Finding the Third Proportional to 299,362 and 646,208

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Solution

The third proportional to 299,362 and 646,208 is: 1,394,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,362 : 646,208 = 646,208 : x
  2. Step 2: Convert to fraction form
    299,362/646,208 = 646,208/x
  3. Step 3: Cross multiply
    299,362x = 646,208 × 646,208
  4. Step 4: Simplify right side
    299,362x = 417,584,779,264
  5. Step 5: Solve for x
    x = 417,584,779,264/299,362
  6. Step 6: Final answer
    x = 1,394,915.79

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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.