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Finding the Fourth Proportional to 662,469.60, 993,218.40 and 262,912.80

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Solution

The fourth proportional to 662,469.60, 993,218.40 and 262,912.80 is: 394,176.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,469.60 : 993,218.40 = 262,912.80 : x
  2. Step 2: Convert to fraction form
    662,469.60/993,218.40 = 262,912.80/x
  3. Step 3: Cross multiply
    662,469.60x = 993,218.40 × 262,912.80
  4. Step 4: Simplify right side
    662,469.60x = 261,129,830,555.52
  5. Step 5: Solve for x
    x = 261,129,830,555.52/662,469.60
  6. Step 6: Final answer
    x = 394,176.32

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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.