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Finding the Fourth Proportional to 455,891.75, 683,226.34 and 354,811.85

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Solution

The fourth proportional to 455,891.75, 683,226.34 and 354,811.85 is: 531,742.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,891.75 : 683,226.34 = 354,811.85 : x
  2. Step 2: Convert to fraction form
    455,891.75/683,226.34 = 354,811.85/x
  3. Step 3: Cross multiply
    455,891.75x = 683,226.34 × 354,811.85
  4. Step 4: Simplify right side
    455,891.75x = 242,416,797,360.97
  5. Step 5: Solve for x
    x = 242,416,797,360.97/455,891.75
  6. Step 6: Final answer
    x = 531,742.02

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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.