Home / 1,231,745.76-1,699,791.21-687,875.79

Finding the Fourth Proportional to 1,231,745.76, 1,699,791.21 and 687,875.79

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Solution

The fourth proportional to 1,231,745.76, 1,699,791.21 and 687,875.79 is: 949,258.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,745.76 : 1,699,791.21 = 687,875.79 : x
  2. Step 2: Convert to fraction form
    1,231,745.76/1,699,791.21 = 687,875.79/x
  3. Step 3: Cross multiply
    1,231,745.76x = 1,699,791.21 × 687,875.79
  4. Step 4: Simplify right side
    1,231,745.76x = 1,169,245,221,413.81
  5. Step 5: Solve for x
    x = 1,169,245,221,413.81/1,231,745.76
  6. Step 6: Final answer
    x = 949,258.57

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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.