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Finding the Fourth Proportional to 722,855.61, 997,546.64 and 400,571.09

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Solution

The fourth proportional to 722,855.61, 997,546.64 and 400,571.09 is: 552,791.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,855.61 : 997,546.64 = 400,571.09 : x
  2. Step 2: Convert to fraction form
    722,855.61/997,546.64 = 400,571.09/x
  3. Step 3: Cross multiply
    722,855.61x = 997,546.64 × 400,571.09
  4. Step 4: Simplify right side
    722,855.61x = 399,588,340,924.33
  5. Step 5: Solve for x
    x = 399,588,340,924.33/722,855.61
  6. Step 6: Final answer
    x = 552,791.37

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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.