Home / 1,899,190.31-2,619,901.83-1,287,133.75

Finding the Fourth Proportional to 1,899,190.31, 2,619,901.83 and 1,287,133.75

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Solution

The fourth proportional to 1,899,190.31, 2,619,901.83 and 1,287,133.75 is: 1,775,579.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899,190.31 : 2,619,901.83 = 1,287,133.75 : x
  2. Step 2: Convert to fraction form
    1,899,190.31/2,619,901.83 = 1,287,133.75/x
  3. Step 3: Cross multiply
    1,899,190.31x = 2,619,901.83 × 1,287,133.75
  4. Step 4: Simplify right side
    1,899,190.31x = 3,372,164,067,079.76
  5. Step 5: Solve for x
    x = 3,372,164,067,079.76/1,899,190.31
  6. Step 6: Final answer
    x = 1,775,579.87

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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.