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Finding the Fourth Proportional to 722,548.28, 997,103.25 and 400,251.32

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Solution

The fourth proportional to 722,548.28, 997,103.25 and 400,251.32 is: 552,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,548.28 : 997,103.25 = 400,251.32 : x
  2. Step 2: Convert to fraction form
    722,548.28/997,103.25 = 400,251.32/x
  3. Step 3: Cross multiply
    722,548.28x = 997,103.25 × 400,251.32
  4. Step 4: Simplify right side
    722,548.28x = 399,091,891,988.79
  5. Step 5: Solve for x
    x = 399,091,891,988.79/722,548.28
  6. Step 6: Final answer
    x = 552,339.41

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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.