Home / 722,205.50-996,631.32-399,908.68

Finding the Fourth Proportional to 722,205.50, 996,631.32 and 399,908.68

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Solution

The fourth proportional to 722,205.50, 996,631.32 and 399,908.68 is: 551,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,205.50 : 996,631.32 = 399,908.68 : x
  2. Step 2: Convert to fraction form
    722,205.50/996,631.32 = 399,908.68/x
  3. Step 3: Cross multiply
    722,205.50x = 996,631.32 × 399,908.68
  4. Step 4: Simplify right side
    722,205.50x = 398,561,514,635.94
  5. Step 5: Solve for x
    x = 398,561,514,635.94/722,205.50
  6. Step 6: Final answer
    x = 551,867.18

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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.