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Finding the Fourth Proportional to 737,074.26, 1,105,607.76 and 287,840.76

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Solution

The fourth proportional to 737,074.26, 1,105,607.76 and 287,840.76 is: 431,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,074.26 : 1,105,607.76 = 287,840.76 : x
  2. Step 2: Convert to fraction form
    737,074.26/1,105,607.76 = 287,840.76/x
  3. Step 3: Cross multiply
    737,074.26x = 1,105,607.76 × 287,840.76
  4. Step 4: Simplify right side
    737,074.26x = 318,238,977,900.30
  5. Step 5: Solve for x
    x = 318,238,977,900.30/737,074.26
  6. Step 6: Final answer
    x = 431,759.72

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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.