Home / 853,212-1,280,028.50-254,170.83

Finding the Fourth Proportional to 853,212, 1,280,028.50 and 254,170.83

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Solution

The fourth proportional to 853,212, 1,280,028.50 and 254,170.83 is: 381,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,212 : 1,280,028.50 = 254,170.83 : x
  2. Step 2: Convert to fraction form
    853,212/1,280,028.50 = 254,170.83/x
  3. Step 3: Cross multiply
    853,212x = 1,280,028.50 × 254,170.83
  4. Step 4: Simplify right side
    853,212x = 325,345,906,268.66
  5. Step 5: Solve for x
    x = 325,345,906,268.66/853,212
  6. Step 6: Final answer
    x = 381,318.95

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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.