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Finding the Fourth Proportional to 644,191.80, 965,121.30 and 550,879.80

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Solution

The fourth proportional to 644,191.80, 965,121.30 and 550,879.80 is: 825,322.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,191.80 : 965,121.30 = 550,879.80 : x
  2. Step 2: Convert to fraction form
    644,191.80/965,121.30 = 550,879.80/x
  3. Step 3: Cross multiply
    644,191.80x = 965,121.30 × 550,879.80
  4. Step 4: Simplify right side
    644,191.80x = 531,665,828,719.74
  5. Step 5: Solve for x
    x = 531,665,828,719.74/644,191.80
  6. Step 6: Final answer
    x = 825,322.25

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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.