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Finding the Fourth Proportional to 500,887.42, 691,007.43 and 331,357.66

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Solution

The fourth proportional to 500,887.42, 691,007.43 and 331,357.66 is: 457,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,887.42 : 691,007.43 = 331,357.66 : x
  2. Step 2: Convert to fraction form
    500,887.42/691,007.43 = 331,357.66/x
  3. Step 3: Cross multiply
    500,887.42x = 691,007.43 × 331,357.66
  4. Step 4: Simplify right side
    500,887.42x = 228,970,605,047.41
  5. Step 5: Solve for x
    x = 228,970,605,047.41/500,887.42
  6. Step 6: Final answer
    x = 457,129.88

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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.