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Finding the Fourth Proportional to 722,644.37, 997,209.96 and 400,335.25

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Solution

The fourth proportional to 722,644.37, 997,209.96 and 400,335.25 is: 552,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,644.37 : 997,209.96 = 400,335.25 : x
  2. Step 2: Convert to fraction form
    722,644.37/997,209.96 = 400,335.25/x
  3. Step 3: Cross multiply
    722,644.37x = 997,209.96 × 400,335.25
  4. Step 4: Simplify right side
    722,644.37x = 399,218,296,238.19
  5. Step 5: Solve for x
    x = 399,218,296,238.19/722,644.37
  6. Step 6: Final answer
    x = 552,440.88

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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.