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Finding the Fourth Proportional to 644,573.80, 965,694.30 and 551,261.80

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Solution

The fourth proportional to 644,573.80, 965,694.30 and 551,261.80 is: 825,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,573.80 : 965,694.30 = 551,261.80 : x
  2. Step 2: Convert to fraction form
    644,573.80/965,694.30 = 551,261.80/x
  3. Step 3: Cross multiply
    644,573.80x = 965,694.30 × 551,261.80
  4. Step 4: Simplify right side
    644,573.80x = 532,350,378,067.74
  5. Step 5: Solve for x
    x = 532,350,378,067.74/644,573.80
  6. Step 6: Final answer
    x = 825,895.15

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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.