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Finding the Third Proportional to 355,221 and 760,824

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Solution

The third proportional to 355,221 and 760,824 is: 1,629,557.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,221 : 760,824 = 760,824 : x
  2. Step 2: Convert to fraction form
    355,221/760,824 = 760,824/x
  3. Step 3: Cross multiply
    355,221x = 760,824 × 760,824
  4. Step 4: Simplify right side
    355,221x = 578,853,158,976
  5. Step 5: Solve for x
    x = 578,853,158,976/355,221
  6. Step 6: Final answer
    x = 1,629,557.82

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.