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Finding the Fourth Proportional to 664,190.80, 996,415.80 and 285,110.80

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Solution

The fourth proportional to 664,190.80, 996,415.80 and 285,110.80 is: 427,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,190.80 : 996,415.80 = 285,110.80 : x
  2. Step 2: Convert to fraction form
    664,190.80/996,415.80 = 285,110.80/x
  3. Step 3: Cross multiply
    664,190.80x = 996,415.80 × 285,110.80
  4. Step 4: Simplify right side
    664,190.80x = 284,088,905,870.64
  5. Step 5: Solve for x
    x = 284,088,905,870.64/664,190.80
  6. Step 6: Final answer
    x = 427,721.83

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1.5x scale

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.