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Finding the Fourth Proportional to 580,288.58, 800,855.79 and 325,640.78

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Solution

The fourth proportional to 580,288.58, 800,855.79 and 325,640.78 is: 449,416.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,288.58 : 800,855.79 = 325,640.78 : x
  2. Step 2: Convert to fraction form
    580,288.58/800,855.79 = 325,640.78/x
  3. Step 3: Cross multiply
    580,288.58x = 800,855.79 × 325,640.78
  4. Step 4: Simplify right side
    580,288.58x = 260,791,306,125.26
  5. Step 5: Solve for x
    x = 260,791,306,125.26/580,288.58
  6. Step 6: Final answer
    x = 449,416.57

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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.