Home / 756,379.20-1,134,568.80-543,802.80

Finding the Fourth Proportional to 756,379.20, 1,134,568.80 and 543,802.80

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Solution

The fourth proportional to 756,379.20, 1,134,568.80 and 543,802.80 is: 815,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,379.20 : 1,134,568.80 = 543,802.80 : x
  2. Step 2: Convert to fraction form
    756,379.20/1,134,568.80 = 543,802.80/x
  3. Step 3: Cross multiply
    756,379.20x = 1,134,568.80 × 543,802.80
  4. Step 4: Simplify right side
    756,379.20x = 616,981,690,232.64
  5. Step 5: Solve for x
    x = 616,981,690,232.64/756,379.20
  6. Step 6: Final answer
    x = 815,704.20

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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.