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Finding the Fourth Proportional to 722,651.27, 997,245.19 and 400,354.29

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Solution

The fourth proportional to 722,651.27, 997,245.19 and 400,354.29 is: 552,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,651.27 : 997,245.19 = 400,354.29 : x
  2. Step 2: Convert to fraction form
    722,651.27/997,245.19 = 400,354.29/x
  3. Step 3: Cross multiply
    722,651.27x = 997,245.19 × 400,354.29
  4. Step 4: Simplify right side
    722,651.27x = 399,251,389,998.37
  5. Step 5: Solve for x
    x = 399,251,389,998.37/722,651.27
  6. Step 6: Final answer
    x = 552,481.41

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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.