Home / 1,189,880.76-1,785,530.36-431,781.38

Finding the Fourth Proportional to 1,189,880.76, 1,785,530.36 and 431,781.38

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Solution

The fourth proportional to 1,189,880.76, 1,785,530.36 and 431,781.38 is: 647,929.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,880.76 : 1,785,530.36 = 431,781.38 : x
  2. Step 2: Convert to fraction form
    1,189,880.76/1,785,530.36 = 431,781.38/x
  3. Step 3: Cross multiply
    1,189,880.76x = 1,785,530.36 × 431,781.38
  4. Step 4: Simplify right side
    1,189,880.76x = 770,958,762,872.70
  5. Step 5: Solve for x
    x = 770,958,762,872.70/1,189,880.76
  6. Step 6: Final answer
    x = 647,929.43

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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.