Home / 722,205.61-996,631.49-399,908.79

Finding the Fourth Proportional to 722,205.61, 996,631.49 and 399,908.79

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Solution

The fourth proportional to 722,205.61, 996,631.49 and 399,908.79 is: 551,867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,205.61 : 996,631.49 = 399,908.79 : x
  2. Step 2: Convert to fraction form
    722,205.61/996,631.49 = 399,908.79/x
  3. Step 3: Cross multiply
    722,205.61x = 996,631.49 × 399,908.79
  4. Step 4: Simplify right side
    722,205.61x = 398,561,693,241.80
  5. Step 5: Solve for x
    x = 398,561,693,241.80/722,205.61
  6. Step 6: Final answer
    x = 551,867.35

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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.