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Finding the Fourth Proportional to 982,980, 1,474,704 and 318,132

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Solution

The fourth proportional to 982,980, 1,474,704 and 318,132 is: 477,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,980 : 1,474,704 = 318,132 : x
  2. Step 2: Convert to fraction form
    982,980/1,474,704 = 318,132/x
  3. Step 3: Cross multiply
    982,980x = 1,474,704 × 318,132
  4. Step 4: Simplify right side
    982,980x = 469,150,532,928
  5. Step 5: Solve for x
    x = 469,150,532,928/982,980
  6. Step 6: Final answer
    x = 477,273.73

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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.