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Finding the Fourth Proportional to 644,188.80, 965,116.80 and 550,876.80

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Solution

The fourth proportional to 644,188.80, 965,116.80 and 550,876.80 is: 825,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,188.80 : 965,116.80 = 550,876.80 : x
  2. Step 2: Convert to fraction form
    644,188.80/965,116.80 = 550,876.80/x
  3. Step 3: Cross multiply
    644,188.80x = 965,116.80 × 550,876.80
  4. Step 4: Simplify right side
    644,188.80x = 531,660,454,410.24
  5. Step 5: Solve for x
    x = 531,660,454,410.24/644,188.80
  6. Step 6: Final answer
    x = 825,317.76

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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.