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Finding the Fourth Proportional to 737,978.61, 1,107,317.84 and 439,049.73

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Solution

The fourth proportional to 737,978.61, 1,107,317.84 and 439,049.73 is: 658,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,978.61 : 1,107,317.84 = 439,049.73 : x
  2. Step 2: Convert to fraction form
    737,978.61/1,107,317.84 = 439,049.73/x
  3. Step 3: Cross multiply
    737,978.61x = 1,107,317.84 × 439,049.73
  4. Step 4: Simplify right side
    737,978.61x = 486,167,596,480.94
  5. Step 5: Solve for x
    x = 486,167,596,480.94/737,978.61
  6. Step 6: Final answer
    x = 658,782.77

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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.