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Finding the Fourth Proportional to 493,772.14, 681,419.55 and 278,921.26

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Solution

The fourth proportional to 493,772.14, 681,419.55 and 278,921.26 is: 384,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,772.14 : 681,419.55 = 278,921.26 : x
  2. Step 2: Convert to fraction form
    493,772.14/681,419.55 = 278,921.26/x
  3. Step 3: Cross multiply
    493,772.14x = 681,419.55 × 278,921.26
  4. Step 4: Simplify right side
    493,772.14x = 190,062,399,474.63
  5. Step 5: Solve for x
    x = 190,062,399,474.63/493,772.14
  6. Step 6: Final answer
    x = 384,919.25

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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.