Home / 826,724.37-1,239,767.72-321,218.81

Finding the Fourth Proportional to 826,724.37, 1,239,767.72 and 321,218.81

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Solution

The fourth proportional to 826,724.37, 1,239,767.72 and 321,218.81 is: 481,704.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,724.37 : 1,239,767.72 = 321,218.81 : x
  2. Step 2: Convert to fraction form
    826,724.37/1,239,767.72 = 321,218.81/x
  3. Step 3: Cross multiply
    826,724.37x = 1,239,767.72 × 321,218.81
  4. Step 4: Simplify right side
    826,724.37x = 398,236,718,524.13
  5. Step 5: Solve for x
    x = 398,236,718,524.13/826,724.37
  6. Step 6: Final answer
    x = 481,704.34

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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.