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Finding the Third Proportional to 321,476.34 and 687,239.44

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Solution

The third proportional to 321,476.34 and 687,239.44 is: 1,469,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,476.34 : 687,239.44 = 687,239.44 : x
  2. Step 2: Convert to fraction form
    321,476.34/687,239.44 = 687,239.44/x
  3. Step 3: Cross multiply
    321,476.34x = 687,239.44 × 687,239.44
  4. Step 4: Simplify right side
    321,476.34x = 472,298,044,455.32
  5. Step 5: Solve for x
    x = 472,298,044,455.32/321,476.34
  6. Step 6: Final answer
    x = 1,469,153.34

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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.