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Finding the Fourth Proportional to 493,825.44, 681,534.41 and 278,979.34

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Solution

The fourth proportional to 493,825.44, 681,534.41 and 278,979.34 is: 385,022.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,825.44 : 681,534.41 = 278,979.34 : x
  2. Step 2: Convert to fraction form
    493,825.44/681,534.41 = 278,979.34/x
  3. Step 3: Cross multiply
    493,825.44x = 681,534.41 × 278,979.34
  4. Step 4: Simplify right side
    493,825.44x = 190,134,019,889.09
  5. Step 5: Solve for x
    x = 190,134,019,889.09/493,825.44
  6. Step 6: Final answer
    x = 385,022.73

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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.