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Finding the Fourth Proportional to 664,230.48, 916,658.28 and 377,791.80

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Solution

The fourth proportional to 664,230.48, 916,658.28 and 377,791.80 is: 521,364.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,230.48 : 916,658.28 = 377,791.80 : x
  2. Step 2: Convert to fraction form
    664,230.48/916,658.28 = 377,791.80/x
  3. Step 3: Cross multiply
    664,230.48x = 916,658.28 × 377,791.80
  4. Step 4: Simplify right side
    664,230.48x = 346,305,981,586.10
  5. Step 5: Solve for x
    x = 346,305,981,586.10/664,230.48
  6. Step 6: Final answer
    x = 521,364.18

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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.