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Finding the Fourth Proportional to 659,014.66, 988,328.21 and 279,932.38

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Solution

The fourth proportional to 659,014.66, 988,328.21 and 279,932.38 is: 419,816.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,014.66 : 988,328.21 = 279,932.38 : x
  2. Step 2: Convert to fraction form
    659,014.66/988,328.21 = 279,932.38/x
  3. Step 3: Cross multiply
    659,014.66x = 988,328.21 × 279,932.38
  4. Step 4: Simplify right side
    659,014.66x = 276,665,068,046.44
  5. Step 5: Solve for x
    x = 276,665,068,046.44/659,014.66
  6. Step 6: Final answer
    x = 419,816.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.