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Finding the Fourth Proportional to 447,790.40, 670,810.80 and 269,768.60

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Solution

The fourth proportional to 447,790.40, 670,810.80 and 269,768.60 is: 404,125.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,790.40 : 670,810.80 = 269,768.60 : x
  2. Step 2: Convert to fraction form
    447,790.40/670,810.80 = 269,768.60/x
  3. Step 3: Cross multiply
    447,790.40x = 670,810.80 × 269,768.60
  4. Step 4: Simplify right side
    447,790.40x = 180,963,690,380.88
  5. Step 5: Solve for x
    x = 180,963,690,380.88/447,790.40
  6. Step 6: Final answer
    x = 404,125.88

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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.