Home / 722,205.35-996,631.12-399,908.53

Finding the Fourth Proportional to 722,205.35, 996,631.12 and 399,908.53

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Solution

The fourth proportional to 722,205.35, 996,631.12 and 399,908.53 is: 551,866.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,205.35 : 996,631.12 = 399,908.53 : x
  2. Step 2: Convert to fraction form
    722,205.35/996,631.12 = 399,908.53/x
  3. Step 3: Cross multiply
    722,205.35x = 996,631.12 × 399,908.53
  4. Step 4: Simplify right side
    722,205.35x = 398,561,286,151.45
  5. Step 5: Solve for x
    x = 398,561,286,151.45/722,205.35
  6. Step 6: Final answer
    x = 551,866.98

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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.