Home / 641,647.05-962,080.83-321,426.51

Finding the Fourth Proportional to 641,647.05, 962,080.83 and 321,426.51

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Solution

The fourth proportional to 641,647.05, 962,080.83 and 321,426.51 is: 481,944.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,647.05 : 962,080.83 = 321,426.51 : x
  2. Step 2: Convert to fraction form
    641,647.05/962,080.83 = 321,426.51/x
  3. Step 3: Cross multiply
    641,647.05x = 962,080.83 × 321,426.51
  4. Step 4: Simplify right side
    641,647.05x = 309,238,283,524.80
  5. Step 5: Solve for x
    x = 309,238,283,524.80/641,647.05
  6. Step 6: Final answer
    x = 481,944.53

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Double scale
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Similar ratio
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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.