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Finding the Fourth Proportional to 455,338.13, 683,364.07 and 317,665.91

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Solution

The fourth proportional to 455,338.13, 683,364.07 and 317,665.91 is: 476,747.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,338.13 : 683,364.07 = 317,665.91 : x
  2. Step 2: Convert to fraction form
    455,338.13/683,364.07 = 317,665.91/x
  3. Step 3: Cross multiply
    455,338.13x = 683,364.07 × 317,665.91
  4. Step 4: Simplify right side
    455,338.13x = 217,081,469,157.85
  5. Step 5: Solve for x
    x = 217,081,469,157.85/455,338.13
  6. Step 6: Final answer
    x = 476,747.84

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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.