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Finding the Fourth Proportional to 603,668.05, 905,502.08 and 404,213.65

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Solution

The fourth proportional to 603,668.05, 905,502.08 and 404,213.65 is: 606,320.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,668.05 : 905,502.08 = 404,213.65 : x
  2. Step 2: Convert to fraction form
    603,668.05/905,502.08 = 404,213.65/x
  3. Step 3: Cross multiply
    603,668.05x = 905,502.08 × 404,213.65
  4. Step 4: Simplify right side
    603,668.05x = 366,016,298,818.32
  5. Step 5: Solve for x
    x = 366,016,298,818.32/603,668.05
  6. Step 6: Final answer
    x = 606,320.48

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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.