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Finding the Third Proportional to 339,072 and 525,342

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Solution

The third proportional to 339,072 and 525,342 is: 813,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,072 : 525,342 = 525,342 : x
  2. Step 2: Convert to fraction form
    339,072/525,342 = 525,342/x
  3. Step 3: Cross multiply
    339,072x = 525,342 × 525,342
  4. Step 4: Simplify right side
    339,072x = 275,984,216,964
  5. Step 5: Solve for x
    x = 275,984,216,964/339,072
  6. Step 6: Final answer
    x = 813,939.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.