Home / 621,062.09-930,928.73-321,240.81

Finding the Fourth Proportional to 621,062.09, 930,928.73 and 321,240.81

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Solution

The fourth proportional to 621,062.09, 930,928.73 and 321,240.81 is: 481,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,062.09 : 930,928.73 = 321,240.81 : x
  2. Step 2: Convert to fraction form
    621,062.09/930,928.73 = 321,240.81/x
  3. Step 3: Cross multiply
    621,062.09x = 930,928.73 × 321,240.81
  4. Step 4: Simplify right side
    621,062.09x = 299,052,297,671.27
  5. Step 5: Solve for x
    x = 299,052,297,671.27/621,062.09
  6. Step 6: Final answer
    x = 481,517.56

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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.