Home / 2,158,183.78-2,978,283.26-1,191,305.61

Finding the Fourth Proportional to 2,158,183.78, 2,978,283.26 and 1,191,305.61

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Solution

The fourth proportional to 2,158,183.78, 2,978,283.26 and 1,191,305.61 is: 1,643,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,183.78 : 2,978,283.26 = 1,191,305.61 : x
  2. Step 2: Convert to fraction form
    2,158,183.78/2,978,283.26 = 1,191,305.61/x
  3. Step 3: Cross multiply
    2,158,183.78x = 2,978,283.26 × 1,191,305.61
  4. Step 4: Simplify right side
    2,158,183.78x = 3,548,045,558,785.35
  5. Step 5: Solve for x
    x = 3,548,045,558,785.35/2,158,183.78
  6. Step 6: Final answer
    x = 1,643,996.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.