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Finding the Third Proportional to 321,120.75 and 500,061.75

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Solution

The third proportional to 321,120.75 and 500,061.75 is: 778,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,120.75 : 500,061.75 = 500,061.75 : x
  2. Step 2: Convert to fraction form
    321,120.75/500,061.75 = 500,061.75/x
  3. Step 3: Cross multiply
    321,120.75x = 500,061.75 × 500,061.75
  4. Step 4: Simplify right side
    321,120.75x = 250,061,753,813.06
  5. Step 5: Solve for x
    x = 250,061,753,813.06/321,120.75
  6. Step 6: Final answer
    x = 778,715.65

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.