Home / 728,002.26-1,004,646.49-422,259.66

Finding the Fourth Proportional to 728,002.26, 1,004,646.49 and 422,259.66

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Solution

The fourth proportional to 728,002.26, 1,004,646.49 and 422,259.66 is: 582,720.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,002.26 : 1,004,646.49 = 422,259.66 : x
  2. Step 2: Convert to fraction form
    728,002.26/1,004,646.49 = 422,259.66/x
  3. Step 3: Cross multiply
    728,002.26x = 1,004,646.49 × 422,259.66
  4. Step 4: Simplify right side
    728,002.26x = 424,221,684,231.94
  5. Step 5: Solve for x
    x = 424,221,684,231.94/728,002.26
  6. Step 6: Final answer
    x = 582,720.28

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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.