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Finding the Fourth Proportional to 722,204.34, 996,641.38 and 399,914.44

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Solution

The fourth proportional to 722,204.34, 996,641.38 and 399,914.44 is: 551,881.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,204.34 : 996,641.38 = 399,914.44 : x
  2. Step 2: Convert to fraction form
    722,204.34/996,641.38 = 399,914.44/x
  3. Step 3: Cross multiply
    722,204.34x = 996,641.38 × 399,914.44
  4. Step 4: Simplify right side
    722,204.34x = 398,571,279,363.53
  5. Step 5: Solve for x
    x = 398,571,279,363.53/722,204.34
  6. Step 6: Final answer
    x = 551,881.59

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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.