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Finding the Fourth Proportional to 545,668.28, 814,234.87 and 488,930.42

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Solution

The fourth proportional to 545,668.28, 814,234.87 and 488,930.42 is: 729,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,668.28 : 814,234.87 = 488,930.42 : x
  2. Step 2: Convert to fraction form
    545,668.28/814,234.87 = 488,930.42/x
  3. Step 3: Cross multiply
    545,668.28x = 814,234.87 × 488,930.42
  4. Step 4: Simplify right side
    545,668.28x = 398,104,196,967.75
  5. Step 5: Solve for x
    x = 398,104,196,967.75/545,668.28
  6. Step 6: Final answer
    x = 729,571.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.