Home / 1,081,171.40-1,491,769.07-645,504.12

Finding the Fourth Proportional to 1,081,171.40, 1,491,769.07 and 645,504.12

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Solution

The fourth proportional to 1,081,171.40, 1,491,769.07 and 645,504.12 is: 890,647.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,171.40 : 1,491,769.07 = 645,504.12 : x
  2. Step 2: Convert to fraction form
    1,081,171.40/1,491,769.07 = 645,504.12/x
  3. Step 3: Cross multiply
    1,081,171.40x = 1,491,769.07 × 645,504.12
  4. Step 4: Simplify right side
    1,081,171.40x = 962,943,077,546.05
  5. Step 5: Solve for x
    x = 962,943,077,546.05/1,081,171.40
  6. Step 6: Final answer
    x = 890,647.94

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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.