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Finding the Fourth Proportional to 501,083.88, 691,527.78 and 331,019.88

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Solution

The fourth proportional to 501,083.88, 691,527.78 and 331,019.88 is: 456,828.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,083.88 : 691,527.78 = 331,019.88 : x
  2. Step 2: Convert to fraction form
    501,083.88/691,527.78 = 331,019.88/x
  3. Step 3: Cross multiply
    501,083.88x = 691,527.78 × 331,019.88
  4. Step 4: Simplify right side
    501,083.88x = 228,909,442,752.27
  5. Step 5: Solve for x
    x = 228,909,442,752.27/501,083.88
  6. Step 6: Final answer
    x = 456,828.59

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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.