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Finding the Fourth Proportional to 667,549.03, 921,213.71 and 361,631.24

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Solution

The fourth proportional to 667,549.03, 921,213.71 and 361,631.24 is: 499,048.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,549.03 : 921,213.71 = 361,631.24 : x
  2. Step 2: Convert to fraction form
    667,549.03/921,213.71 = 361,631.24/x
  3. Step 3: Cross multiply
    667,549.03x = 921,213.71 × 361,631.24
  4. Step 4: Simplify right side
    667,549.03x = 333,139,651,646.23
  5. Step 5: Solve for x
    x = 333,139,651,646.23/667,549.03
  6. Step 6: Final answer
    x = 499,048.97

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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.