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Finding the Fourth Proportional to 394,517.60, 591,776.40 and 328,907.60

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Solution

The fourth proportional to 394,517.60, 591,776.40 and 328,907.60 is: 493,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,517.60 : 591,776.40 = 328,907.60 : x
  2. Step 2: Convert to fraction form
    394,517.60/591,776.40 = 328,907.60/x
  3. Step 3: Cross multiply
    394,517.60x = 591,776.40 × 328,907.60
  4. Step 4: Simplify right side
    394,517.60x = 194,639,755,460.64
  5. Step 5: Solve for x
    x = 194,639,755,460.64/394,517.60
  6. Step 6: Final answer
    x = 493,361.40

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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.