Home / 1,391,128.26-2,080,559.07-1,211,016.66

Finding the Fourth Proportional to 1,391,128.26, 2,080,559.07 and 1,211,016.66

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Solution

The fourth proportional to 1,391,128.26, 2,080,559.07 and 1,211,016.66 is: 1,811,185.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,128.26 : 2,080,559.07 = 1,211,016.66 : x
  2. Step 2: Convert to fraction form
    1,391,128.26/2,080,559.07 = 1,211,016.66/x
  3. Step 3: Cross multiply
    1,391,128.26x = 2,080,559.07 × 1,211,016.66
  4. Step 4: Simplify right side
    1,391,128.26x = 2,519,591,695,884.11
  5. Step 5: Solve for x
    x = 2,519,591,695,884.11/1,391,128.26
  6. Step 6: Final answer
    x = 1,811,185.76

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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.