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Finding the Third Proportional to 296,721 and 648,603

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Solution

The third proportional to 296,721 and 648,603 is: 1,417,782.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,721 : 648,603 = 648,603 : x
  2. Step 2: Convert to fraction form
    296,721/648,603 = 648,603/x
  3. Step 3: Cross multiply
    296,721x = 648,603 × 648,603
  4. Step 4: Simplify right side
    296,721x = 420,685,851,609
  5. Step 5: Solve for x
    x = 420,685,851,609/296,721
  6. Step 6: Final answer
    x = 1,417,782.54

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.