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Finding the Fourth Proportional to 491,896.80, 737,734.40 and 321,064.72

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Solution

The fourth proportional to 491,896.80, 737,734.40 and 321,064.72 is: 481,524.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,896.80 : 737,734.40 = 321,064.72 : x
  2. Step 2: Convert to fraction form
    491,896.80/737,734.40 = 321,064.72/x
  3. Step 3: Cross multiply
    491,896.80x = 737,734.40 × 321,064.72
  4. Step 4: Simplify right side
    491,896.80x = 236,860,488,570.37
  5. Step 5: Solve for x
    x = 236,860,488,570.37/491,896.80
  6. Step 6: Final answer
    x = 481,524.76

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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.