Home / 422,740.94-582,719.82-320,356.55

Finding the Fourth Proportional to 422,740.94, 582,719.82 and 320,356.55

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Solution

The fourth proportional to 422,740.94, 582,719.82 and 320,356.55 is: 441,589.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,740.94 : 582,719.82 = 320,356.55 : x
  2. Step 2: Convert to fraction form
    422,740.94/582,719.82 = 320,356.55/x
  3. Step 3: Cross multiply
    422,740.94x = 582,719.82 × 320,356.55
  4. Step 4: Simplify right side
    422,740.94x = 186,678,111,151.82
  5. Step 5: Solve for x
    x = 186,678,111,151.82/422,740.94
  6. Step 6: Final answer
    x = 441,589.86

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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.