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Finding the Fourth Proportional to 491,939.84, 737,909.96 and 379,783.84

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Solution

The fourth proportional to 491,939.84, 737,909.96 and 379,783.84 is: 569,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,939.84 : 737,909.96 = 379,783.84 : x
  2. Step 2: Convert to fraction form
    491,939.84/737,909.96 = 379,783.84/x
  3. Step 3: Cross multiply
    491,939.84x = 737,909.96 × 379,783.84
  4. Step 4: Simplify right side
    491,939.84x = 280,246,278,183.05
  5. Step 5: Solve for x
    x = 280,246,278,183.05/491,939.84
  6. Step 6: Final answer
    x = 569,675.91

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1.5x scale

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.