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Finding the Fourth Proportional to 722,642.06, 997,245.33 and 400,372.22

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Solution

The fourth proportional to 722,642.06, 997,245.33 and 400,372.22 is: 552,513.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,642.06 : 997,245.33 = 400,372.22 : x
  2. Step 2: Convert to fraction form
    722,642.06/997,245.33 = 400,372.22/x
  3. Step 3: Cross multiply
    722,642.06x = 997,245.33 × 400,372.22
  4. Step 4: Simplify right side
    722,642.06x = 399,269,326,656.73
  5. Step 5: Solve for x
    x = 399,269,326,656.73/722,642.06
  6. Step 6: Final answer
    x = 552,513.27

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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.