Home / 1,081,161.66-1,491,755.07-645,494.10

Finding the Fourth Proportional to 1,081,161.66, 1,491,755.07 and 645,494.10

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Solution

The fourth proportional to 1,081,161.66, 1,491,755.07 and 645,494.10 is: 890,633.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,161.66 : 1,491,755.07 = 645,494.10 : x
  2. Step 2: Convert to fraction form
    1,081,161.66/1,491,755.07 = 645,494.10/x
  3. Step 3: Cross multiply
    1,081,161.66x = 1,491,755.07 × 645,494.10
  4. Step 4: Simplify right side
    1,081,161.66x = 962,919,096,330.09
  5. Step 5: Solve for x
    x = 962,919,096,330.09/1,081,161.66
  6. Step 6: Final answer
    x = 890,633.78

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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.