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Finding the Fourth Proportional to 451,231.86, 622,632.69 and 279,322.74

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Solution

The fourth proportional to 451,231.86, 622,632.69 and 279,322.74 is: 385,423.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,231.86 : 622,632.69 = 279,322.74 : x
  2. Step 2: Convert to fraction form
    451,231.86/622,632.69 = 279,322.74/x
  3. Step 3: Cross multiply
    451,231.86x = 622,632.69 × 279,322.74
  4. Step 4: Simplify right side
    451,231.86x = 173,915,468,984.37
  5. Step 5: Solve for x
    x = 173,915,468,984.37/451,231.86
  6. Step 6: Final answer
    x = 385,423.74

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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.