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Finding the Fourth Proportional to 580,288.21, 800,855.27 and 325,640.41

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Solution

The fourth proportional to 580,288.21, 800,855.27 and 325,640.41 is: 449,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,288.21 : 800,855.27 = 325,640.41 : x
  2. Step 2: Convert to fraction form
    580,288.21/800,855.27 = 325,640.41/x
  3. Step 3: Cross multiply
    580,288.21x = 800,855.27 × 325,640.41
  4. Step 4: Simplify right side
    580,288.21x = 260,790,836,064.27
  5. Step 5: Solve for x
    x = 260,790,836,064.27/580,288.21
  6. Step 6: Final answer
    x = 449,416.05

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1.5x scale

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.