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Finding the Fourth Proportional to 664,270.80, 996,535.80 and 285,190.80

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Solution

The fourth proportional to 664,270.80, 996,535.80 and 285,190.80 is: 427,841.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,270.80 : 996,535.80 = 285,190.80 : x
  2. Step 2: Convert to fraction form
    664,270.80/996,535.80 = 285,190.80/x
  3. Step 3: Cross multiply
    664,270.80x = 996,535.80 × 285,190.80
  4. Step 4: Simplify right side
    664,270.80x = 284,202,842,030.64
  5. Step 5: Solve for x
    x = 284,202,842,030.64/664,270.80
  6. Step 6: Final answer
    x = 427,841.84

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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.