Home / 1,081,113.68-1,491,689.34-645,446.23

Finding the Fourth Proportional to 1,081,113.68, 1,491,689.34 and 645,446.23

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Solution

The fourth proportional to 1,081,113.68, 1,491,689.34 and 645,446.23 is: 890,568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,113.68 : 1,491,689.34 = 645,446.23 : x
  2. Step 2: Convert to fraction form
    1,081,113.68/1,491,689.34 = 645,446.23/x
  3. Step 3: Cross multiply
    1,081,113.68x = 1,491,689.34 × 645,446.23
  4. Step 4: Simplify right side
    1,081,113.68x = 962,805,257,104.97
  5. Step 5: Solve for x
    x = 962,805,257,104.97/1,081,113.68
  6. Step 6: Final answer
    x = 890,568.01

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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.