Home / 1,189,885.29-1,785,537.11-431,785.90

Finding the Fourth Proportional to 1,189,885.29, 1,785,537.11 and 431,785.90

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Solution

The fourth proportional to 1,189,885.29, 1,785,537.11 and 431,785.90 is: 647,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,885.29 : 1,785,537.11 = 431,785.90 : x
  2. Step 2: Convert to fraction form
    1,189,885.29/1,785,537.11 = 431,785.90/x
  3. Step 3: Cross multiply
    1,189,885.29x = 1,785,537.11 × 431,785.90
  4. Step 4: Simplify right side
    1,189,885.29x = 770,969,748,024.75
  5. Step 5: Solve for x
    x = 770,969,748,024.75/1,189,885.29
  6. Step 6: Final answer
    x = 647,936.20

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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.