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Finding the Fourth Proportional to 414,758.87, 621,504.53 and 279,322.15

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Solution

The fourth proportional to 414,758.87, 621,504.53 and 279,322.15 is: 418,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,758.87 : 621,504.53 = 279,322.15 : x
  2. Step 2: Convert to fraction form
    414,758.87/621,504.53 = 279,322.15/x
  3. Step 3: Cross multiply
    414,758.87x = 621,504.53 × 279,322.15
  4. Step 4: Simplify right side
    414,758.87x = 173,599,981,554.34
  5. Step 5: Solve for x
    x = 173,599,981,554.34/414,758.87
  6. Step 6: Final answer
    x = 418,556.40

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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.