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Finding the Fourth Proportional to 722,520.62, 997,065.97 and 400,223.96

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Solution

The fourth proportional to 722,520.62, 997,065.97 and 400,223.96 is: 552,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,520.62 : 997,065.97 = 400,223.96 : x
  2. Step 2: Convert to fraction form
    722,520.62/997,065.97 = 400,223.96/x
  3. Step 3: Cross multiply
    722,520.62x = 997,065.97 × 400,223.96
  4. Step 4: Simplify right side
    722,520.62x = 399,049,690,894.64
  5. Step 5: Solve for x
    x = 399,049,690,894.64/722,520.62
  6. Step 6: Final answer
    x = 552,302.15

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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.