Home / 1,189,887.27-1,785,540.09-431,787.89

Finding the Fourth Proportional to 1,189,887.27, 1,785,540.09 and 431,787.89

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Solution

The fourth proportional to 1,189,887.27, 1,785,540.09 and 431,787.89 is: 647,939.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,887.27 : 1,785,540.09 = 431,787.89 : x
  2. Step 2: Convert to fraction form
    1,189,887.27/1,785,540.09 = 431,787.89/x
  3. Step 3: Cross multiply
    1,189,887.27x = 1,785,540.09 × 431,787.89
  4. Step 4: Simplify right side
    1,189,887.27x = 770,974,579,043.81
  5. Step 5: Solve for x
    x = 770,974,579,043.81/1,189,887.27
  6. Step 6: Final answer
    x = 647,939.18

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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.