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Finding the Fourth Proportional to 551,067.56, 760,472.84 and 309,350.60

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Solution

The fourth proportional to 551,067.56, 760,472.84 and 309,350.60 is: 426,903.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,067.56 : 760,472.84 = 309,350.60 : x
  2. Step 2: Convert to fraction form
    551,067.56/760,472.84 = 309,350.60/x
  3. Step 3: Cross multiply
    551,067.56x = 760,472.84 × 309,350.60
  4. Step 4: Simplify right side
    551,067.56x = 235,252,729,337.70
  5. Step 5: Solve for x
    x = 235,252,729,337.70/551,067.56
  6. Step 6: Final answer
    x = 426,903.61

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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.