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Finding the Fourth Proportional to 722,546.11, 997,040.90 and 400,195.98

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Solution

The fourth proportional to 722,546.11, 997,040.90 and 400,195.98 is: 552,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,546.11 : 997,040.90 = 400,195.98 : x
  2. Step 2: Convert to fraction form
    722,546.11/997,040.90 = 400,195.98/x
  3. Step 3: Cross multiply
    722,546.11x = 997,040.90 × 400,195.98
  4. Step 4: Simplify right side
    722,546.11x = 399,011,761,076.07
  5. Step 5: Solve for x
    x = 399,011,761,076.07/722,546.11
  6. Step 6: Final answer
    x = 552,230.17

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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.