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Finding the Third Proportional to 386,240 and 614,592

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Solution

The third proportional to 386,240 and 614,592 is: 977,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,240 : 614,592 = 614,592 : x
  2. Step 2: Convert to fraction form
    386,240/614,592 = 614,592/x
  3. Step 3: Cross multiply
    386,240x = 614,592 × 614,592
  4. Step 4: Simplify right side
    386,240x = 377,723,326,464
  5. Step 5: Solve for x
    x = 377,723,326,464/386,240
  6. Step 6: Final answer
    x = 977,949.79

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.