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Finding the Fourth Proportional to 579,970.13, 800,367.49 and 321,863.80

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Solution

The fourth proportional to 579,970.13, 800,367.49 and 321,863.80 is: 444,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,970.13 : 800,367.49 = 321,863.80 : x
  2. Step 2: Convert to fraction form
    579,970.13/800,367.49 = 321,863.80/x
  3. Step 3: Cross multiply
    579,970.13x = 800,367.49 × 321,863.80
  4. Step 4: Simplify right side
    579,970.13x = 257,609,318,922.28
  5. Step 5: Solve for x
    x = 257,609,318,922.28/579,970.13
  6. Step 6: Final answer
    x = 444,176.87

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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.