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Finding the Fourth Proportional to 722,548.32, 997,103.63 and 400,257.42

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Solution

The fourth proportional to 722,548.32, 997,103.63 and 400,257.42 is: 552,348.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,548.32 : 997,103.63 = 400,257.42 : x
  2. Step 2: Convert to fraction form
    722,548.32/997,103.63 = 400,257.42/x
  3. Step 3: Cross multiply
    722,548.32x = 997,103.63 × 400,257.42
  4. Step 4: Simplify right side
    722,548.32x = 399,098,127,417.08
  5. Step 5: Solve for x
    x = 399,098,127,417.08/722,548.32
  6. Step 6: Final answer
    x = 552,348.01

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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.