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Finding the Fourth Proportional to 447,879.38, 670,241.08 and 279,478.86

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Solution

The fourth proportional to 447,879.38, 670,241.08 and 279,478.86 is: 418,233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,879.38 : 670,241.08 = 279,478.86 : x
  2. Step 2: Convert to fraction form
    447,879.38/670,241.08 = 279,478.86/x
  3. Step 3: Cross multiply
    447,879.38x = 670,241.08 × 279,478.86
  4. Step 4: Simplify right side
    447,879.38x = 187,318,210,799.51
  5. Step 5: Solve for x
    x = 187,318,210,799.51/447,879.38
  6. Step 6: Final answer
    x = 418,233.62

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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.