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Finding the Fourth Proportional to 505,218.72, 696,017.53 and 351,979.73

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Solution

The fourth proportional to 505,218.72, 696,017.53 and 351,979.73 is: 484,906.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,218.72 : 696,017.53 = 351,979.73 : x
  2. Step 2: Convert to fraction form
    505,218.72/696,017.53 = 351,979.73/x
  3. Step 3: Cross multiply
    505,218.72x = 696,017.53 × 351,979.73
  4. Step 4: Simplify right side
    505,218.72x = 244,984,062,844.56
  5. Step 5: Solve for x
    x = 244,984,062,844.56/505,218.72
  6. Step 6: Final answer
    x = 484,906.94

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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.