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Finding the Fourth Proportional to 996,616.80, 1,494,487.80 and 397,378.80

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Solution

The fourth proportional to 996,616.80, 1,494,487.80 and 397,378.80 is: 595,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,616.80 : 1,494,487.80 = 397,378.80 : x
  2. Step 2: Convert to fraction form
    996,616.80/1,494,487.80 = 397,378.80/x
  3. Step 3: Cross multiply
    996,616.80x = 1,494,487.80 × 397,378.80
  4. Step 4: Simplify right side
    996,616.80x = 593,877,768,578.64
  5. Step 5: Solve for x
    x = 593,877,768,578.64/996,616.80
  6. Step 6: Final answer
    x = 595,893.80

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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.