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Finding the Fourth Proportional to 644,806.20, 967,209.30 and 579,487.80

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Solution

The fourth proportional to 644,806.20, 967,209.30 and 579,487.80 is: 869,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,806.20 : 967,209.30 = 579,487.80 : x
  2. Step 2: Convert to fraction form
    644,806.20/967,209.30 = 579,487.80/x
  3. Step 3: Cross multiply
    644,806.20x = 967,209.30 × 579,487.80
  4. Step 4: Simplify right side
    644,806.20x = 560,485,989,396.54
  5. Step 5: Solve for x
    x = 560,485,989,396.54/644,806.20
  6. Step 6: Final answer
    x = 869,231.70

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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.