Home / 687,087.43-1,029,960.97-327,161.57

Finding the Fourth Proportional to 687,087.43, 1,029,960.97 and 327,161.57

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Solution

The fourth proportional to 687,087.43, 1,029,960.97 and 327,161.57 is: 490,423.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,087.43 : 1,029,960.97 = 327,161.57 : x
  2. Step 2: Convert to fraction form
    687,087.43/1,029,960.97 = 327,161.57/x
  3. Step 3: Cross multiply
    687,087.43x = 1,029,960.97 × 327,161.57
  4. Step 4: Simplify right side
    687,087.43x = 336,963,642,016.21
  5. Step 5: Solve for x
    x = 336,963,642,016.21/687,087.43
  6. Step 6: Final answer
    x = 490,423.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.