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Finding the Fourth Proportional to 722,487.30, 997,065.29 and 400,197.36

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Solution

The fourth proportional to 722,487.30, 997,065.29 and 400,197.36 is: 552,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,487.30 : 997,065.29 = 400,197.36 : x
  2. Step 2: Convert to fraction form
    722,487.30/997,065.29 = 400,197.36/x
  3. Step 3: Cross multiply
    722,487.30x = 997,065.29 × 400,197.36
  4. Step 4: Simplify right side
    722,487.30x = 399,022,896,805.63
  5. Step 5: Solve for x
    x = 399,022,896,805.63/722,487.30
  6. Step 6: Final answer
    x = 552,290.53

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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.