Home / 1,189,906.24-1,785,568.56-431,806.90

Finding the Fourth Proportional to 1,189,906.24, 1,785,568.56 and 431,806.90

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Solution

The fourth proportional to 1,189,906.24, 1,785,568.56 and 431,806.90 is: 647,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,906.24 : 1,785,568.56 = 431,806.90 : x
  2. Step 2: Convert to fraction form
    1,189,906.24/1,785,568.56 = 431,806.90/x
  3. Step 3: Cross multiply
    1,189,906.24x = 1,785,568.56 × 431,806.90
  4. Step 4: Simplify right side
    1,189,906.24x = 771,020,824,631.06
  5. Step 5: Solve for x
    x = 771,020,824,631.06/1,189,906.24
  6. Step 6: Final answer
    x = 647,967.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.