Home / 1,109,336.66-1,660,739.07-687,255.38

Finding the Fourth Proportional to 1,109,336.66, 1,660,739.07 and 687,255.38

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Solution

The fourth proportional to 1,109,336.66, 1,660,739.07 and 687,255.38 is: 1,028,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,336.66 : 1,660,739.07 = 687,255.38 : x
  2. Step 2: Convert to fraction form
    1,109,336.66/1,660,739.07 = 687,255.38/x
  3. Step 3: Cross multiply
    1,109,336.66x = 1,660,739.07 × 687,255.38
  4. Step 4: Simplify right side
    1,109,336.66x = 1,141,351,860,633.70
  5. Step 5: Solve for x
    x = 1,141,351,860,633.70/1,109,336.66
  6. Step 6: Final answer
    x = 1,028,859.77

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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.