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Finding the Third Proportional to 359,921.25 and 787,639.50

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Solution

The third proportional to 359,921.25 and 787,639.50 is: 1,723,643.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,921.25 : 787,639.50 = 787,639.50 : x
  2. Step 2: Convert to fraction form
    359,921.25/787,639.50 = 787,639.50/x
  3. Step 3: Cross multiply
    359,921.25x = 787,639.50 × 787,639.50
  4. Step 4: Simplify right side
    359,921.25x = 620,375,981,960.25
  5. Step 5: Solve for x
    x = 620,375,981,960.25/359,921.25
  6. Step 6: Final answer
    x = 1,723,643.66

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.