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Finding the Fourth Proportional to 722,203.11, 996,628.04 and 399,906.29

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Solution

The fourth proportional to 722,203.11, 996,628.04 and 399,906.29 is: 551,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,203.11 : 996,628.04 = 399,906.29 : x
  2. Step 2: Convert to fraction form
    722,203.11/996,628.04 = 399,906.29/x
  3. Step 3: Cross multiply
    722,203.11x = 996,628.04 × 399,906.29
  4. Step 4: Simplify right side
    722,203.11x = 398,557,821,986.37
  5. Step 5: Solve for x
    x = 398,557,821,986.37/722,203.11
  6. Step 6: Final answer
    x = 551,863.90

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1.5x scale

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.