Home / 853,119.90-1,278,695.52-320,301.09

Finding the Fourth Proportional to 853,119.90, 1,278,695.52 and 320,301.09

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Solution

The fourth proportional to 853,119.90, 1,278,695.52 and 320,301.09 is: 480,082.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,119.90 : 1,278,695.52 = 320,301.09 : x
  2. Step 2: Convert to fraction form
    853,119.90/1,278,695.52 = 320,301.09/x
  3. Step 3: Cross multiply
    853,119.90x = 1,278,695.52 × 320,301.09
  4. Step 4: Simplify right side
    853,119.90x = 409,567,568,834.12
  5. Step 5: Solve for x
    x = 409,567,568,834.12/853,119.90
  6. Step 6: Final answer
    x = 480,082.07

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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.