Home / 728,168.26-1,004,906.22-405,880.70

Finding the Fourth Proportional to 728,168.26, 1,004,906.22 and 405,880.70

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Solution

The fourth proportional to 728,168.26, 1,004,906.22 and 405,880.70 is: 560,134.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,168.26 : 1,004,906.22 = 405,880.70 : x
  2. Step 2: Convert to fraction form
    728,168.26/1,004,906.22 = 405,880.70/x
  3. Step 3: Cross multiply
    728,168.26x = 1,004,906.22 × 405,880.70
  4. Step 4: Simplify right side
    728,168.26x = 407,872,040,007.95
  5. Step 5: Solve for x
    x = 407,872,040,007.95/728,168.26
  6. Step 6: Final answer
    x = 560,134.33

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1.5x scale

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.