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Finding the Fourth Proportional to 722,589.58, 997,100.94 and 400,239.46

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Solution

The fourth proportional to 722,589.58, 997,100.94 and 400,239.46 is: 552,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,589.58 : 997,100.94 = 400,239.46 : x
  2. Step 2: Convert to fraction form
    722,589.58/997,100.94 = 400,239.46/x
  3. Step 3: Cross multiply
    722,589.58x = 997,100.94 × 400,239.46
  4. Step 4: Simplify right side
    722,589.58x = 399,079,141,791.09
  5. Step 5: Solve for x
    x = 399,079,141,791.09/722,589.58
  6. Step 6: Final answer
    x = 552,290.20

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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.