Home / 2,168,178.78-2,991,985.92-1,188,112

Finding the Fourth Proportional to 2,168,178.78, 2,991,985.92 and 1,188,112

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Solution

The fourth proportional to 2,168,178.78, 2,991,985.92 and 1,188,112 is: 1,639,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168,178.78 : 2,991,985.92 = 1,188,112 : x
  2. Step 2: Convert to fraction form
    2,168,178.78/2,991,985.92 = 1,188,112/x
  3. Step 3: Cross multiply
    2,168,178.78x = 2,991,985.92 × 1,188,112
  4. Step 4: Simplify right side
    2,168,178.78x = 3,554,814,375,383.04
  5. Step 5: Solve for x
    x = 3,554,814,375,383.04/2,168,178.78
  6. Step 6: Final answer
    x = 1,639,539.33

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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.