Home / 826,717.29-1,240,351.88-321,294.30

Finding the Fourth Proportional to 826,717.29, 1,240,351.88 and 321,294.30

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Solution

The fourth proportional to 826,717.29, 1,240,351.88 and 321,294.30 is: 482,048.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,717.29 : 1,240,351.88 = 321,294.30 : x
  2. Step 2: Convert to fraction form
    826,717.29/1,240,351.88 = 321,294.30/x
  3. Step 3: Cross multiply
    826,717.29x = 1,240,351.88 × 321,294.30
  4. Step 4: Simplify right side
    826,717.29x = 398,517,987,431.81
  5. Step 5: Solve for x
    x = 398,517,987,431.81/826,717.29
  6. Step 6: Final answer
    x = 482,048.69

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1.5x scale

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.