Home / 1,081,115.50-1,491,691.85-645,448.04

Finding the Fourth Proportional to 1,081,115.50, 1,491,691.85 and 645,448.04

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Solution

The fourth proportional to 1,081,115.50, 1,491,691.85 and 645,448.04 is: 890,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,115.50 : 1,491,691.85 = 645,448.04 : x
  2. Step 2: Convert to fraction form
    1,081,115.50/1,491,691.85 = 645,448.04/x
  3. Step 3: Cross multiply
    1,081,115.50x = 1,491,691.85 × 645,448.04
  4. Step 4: Simplify right side
    1,081,115.50x = 962,809,577,639.23
  5. Step 5: Solve for x
    x = 962,809,577,639.23/1,081,115.50
  6. Step 6: Final answer
    x = 890,570.51

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Double scale
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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.