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Finding the Fourth Proportional to 394,645.60, 591,968.40 and 364,232.80

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Solution

The fourth proportional to 394,645.60, 591,968.40 and 364,232.80 is: 546,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,645.60 : 591,968.40 = 364,232.80 : x
  2. Step 2: Convert to fraction form
    394,645.60/591,968.40 = 364,232.80/x
  3. Step 3: Cross multiply
    394,645.60x = 591,968.40 × 364,232.80
  4. Step 4: Simplify right side
    394,645.60x = 215,614,307,843.52
  5. Step 5: Solve for x
    x = 215,614,307,843.52/394,645.60
  6. Step 6: Final answer
    x = 546,349.20

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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.