Home / 876,379.28-1,314,568.92-211,531.28

Finding the Fourth Proportional to 876,379.28, 1,314,568.92 and 211,531.28

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Solution

The fourth proportional to 876,379.28, 1,314,568.92 and 211,531.28 is: 317,296.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,379.28 : 1,314,568.92 = 211,531.28 : x
  2. Step 2: Convert to fraction form
    876,379.28/1,314,568.92 = 211,531.28/x
  3. Step 3: Cross multiply
    876,379.28x = 1,314,568.92 × 211,531.28
  4. Step 4: Simplify right side
    876,379.28x = 278,072,439,722.97
  5. Step 5: Solve for x
    x = 278,072,439,722.97/876,379.28
  6. Step 6: Final answer
    x = 317,296.91

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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.