Home / 722,121.72-996,584.08-399,861.80

Finding the Fourth Proportional to 722,121.72, 996,584.08 and 399,861.80

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Solution

The fourth proportional to 722,121.72, 996,584.08 and 399,861.80 is: 551,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,121.72 : 996,584.08 = 399,861.80 : x
  2. Step 2: Convert to fraction form
    722,121.72/996,584.08 = 399,861.80/x
  3. Step 3: Cross multiply
    722,121.72x = 996,584.08 × 399,861.80
  4. Step 4: Simplify right side
    722,121.72x = 398,495,904,080.14
  5. Step 5: Solve for x
    x = 398,495,904,080.14/722,121.72
  6. Step 6: Final answer
    x = 551,840.35

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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.