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Finding the Fourth Proportional to 737,978.86, 1,107,318.21 and 439,049.98

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Solution

The fourth proportional to 737,978.86, 1,107,318.21 and 439,049.98 is: 658,783.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,978.86 : 1,107,318.21 = 439,049.98 : x
  2. Step 2: Convert to fraction form
    737,978.86/1,107,318.21 = 439,049.98/x
  3. Step 3: Cross multiply
    737,978.86x = 1,107,318.21 × 439,049.98
  4. Step 4: Simplify right side
    737,978.86x = 486,168,037,954.14
  5. Step 5: Solve for x
    x = 486,168,037,954.14/737,978.86
  6. Step 6: Final answer
    x = 658,783.15

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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.