Home / 1,291,021.66-1,932,391.77-690,481.18

Finding the Fourth Proportional to 1,291,021.66, 1,932,391.77 and 690,481.18

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Solution

The fourth proportional to 1,291,021.66, 1,932,391.77 and 690,481.18 is: 1,033,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,021.66 : 1,932,391.77 = 690,481.18 : x
  2. Step 2: Convert to fraction form
    1,291,021.66/1,932,391.77 = 690,481.18/x
  3. Step 3: Cross multiply
    1,291,021.66x = 1,932,391.77 × 690,481.18
  4. Step 4: Simplify right side
    1,291,021.66x = 1,334,280,149,571.89
  5. Step 5: Solve for x
    x = 1,334,280,149,571.89/1,291,021.66
  6. Step 6: Final answer
    x = 1,033,507.18

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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.