Home / 1,189,881.76-1,785,531.86-431,782.38

Finding the Fourth Proportional to 1,189,881.76, 1,785,531.86 and 431,782.38

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Solution

The fourth proportional to 1,189,881.76, 1,785,531.86 and 431,782.38 is: 647,930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,881.76 : 1,785,531.86 = 431,782.38 : x
  2. Step 2: Convert to fraction form
    1,189,881.76/1,785,531.86 = 431,782.38/x
  3. Step 3: Cross multiply
    1,189,881.76x = 1,785,531.86 × 431,782.38
  4. Step 4: Simplify right side
    1,189,881.76x = 770,961,196,076.63
  5. Step 5: Solve for x
    x = 770,961,196,076.63/1,189,881.76
  6. Step 6: Final answer
    x = 647,930.93

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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.