Home / 1,187,791.02-1,639,163.79-643,927.86

Finding the Fourth Proportional to 1,187,791.02, 1,639,163.79 and 643,927.86

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Solution

The fourth proportional to 1,187,791.02, 1,639,163.79 and 643,927.86 is: 888,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,791.02 : 1,639,163.79 = 643,927.86 : x
  2. Step 2: Convert to fraction form
    1,187,791.02/1,639,163.79 = 643,927.86/x
  3. Step 3: Cross multiply
    1,187,791.02x = 1,639,163.79 × 643,927.86
  4. Step 4: Simplify right side
    1,187,791.02x = 1,055,503,231,484.19
  5. Step 5: Solve for x
    x = 1,055,503,231,484.19/1,187,791.02
  6. Step 6: Final answer
    x = 888,627.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.