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Finding the Fourth Proportional to 700,035.40, 965,877.78 and 394,049.80

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Solution

The fourth proportional to 700,035.40, 965,877.78 and 394,049.80 is: 543,692.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,035.40 : 965,877.78 = 394,049.80 : x
  2. Step 2: Convert to fraction form
    700,035.40/965,877.78 = 394,049.80/x
  3. Step 3: Cross multiply
    700,035.40x = 965,877.78 × 394,049.80
  4. Step 4: Simplify right side
    700,035.40x = 380,603,946,033.44
  5. Step 5: Solve for x
    x = 380,603,946,033.44/700,035.40
  6. Step 6: Final answer
    x = 543,692.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.