Home / 1,189,883.76-1,785,534.86-431,784.38

Finding the Fourth Proportional to 1,189,883.76, 1,785,534.86 and 431,784.38

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Solution

The fourth proportional to 1,189,883.76, 1,785,534.86 and 431,784.38 is: 647,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,883.76 : 1,785,534.86 = 431,784.38 : x
  2. Step 2: Convert to fraction form
    1,189,883.76/1,785,534.86 = 431,784.38/x
  3. Step 3: Cross multiply
    1,189,883.76x = 1,785,534.86 × 431,784.38
  4. Step 4: Simplify right side
    1,189,883.76x = 770,966,062,493.49
  5. Step 5: Solve for x
    x = 770,966,062,493.49/1,189,883.76
  6. Step 6: Final answer
    x = 647,933.93

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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.