Home / 826,719.05-1,239,759.74-321,213.47

Finding the Fourth Proportional to 826,719.05, 1,239,759.74 and 321,213.47

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Solution

The fourth proportional to 826,719.05, 1,239,759.74 and 321,213.47 is: 481,696.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,719.05 : 1,239,759.74 = 321,213.47 : x
  2. Step 2: Convert to fraction form
    826,719.05/1,239,759.74 = 321,213.47/x
  3. Step 3: Cross multiply
    826,719.05x = 1,239,759.74 × 321,213.47
  4. Step 4: Simplify right side
    826,719.05x = 398,227,528,051.70
  5. Step 5: Solve for x
    x = 398,227,528,051.70/826,719.05
  6. Step 6: Final answer
    x = 481,696.32

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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.