Home / 1,280,620.26-1,920,930.12-333,988.38

Finding the Fourth Proportional to 1,280,620.26, 1,920,930.12 and 333,988.38

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Solution

The fourth proportional to 1,280,620.26, 1,920,930.12 and 333,988.38 is: 500,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,620.26 : 1,920,930.12 = 333,988.38 : x
  2. Step 2: Convert to fraction form
    1,280,620.26/1,920,930.12 = 333,988.38/x
  3. Step 3: Cross multiply
    1,280,620.26x = 1,920,930.12 × 333,988.38
  4. Step 4: Simplify right side
    1,280,620.26x = 641,568,338,872.01
  5. Step 5: Solve for x
    x = 641,568,338,872.01/1,280,620.26
  6. Step 6: Final answer
    x = 500,982.50

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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.