Home / 722,205.59-996,631.57-399,908.77

Finding the Fourth Proportional to 722,205.59, 996,631.57 and 399,908.77

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Solution

The fourth proportional to 722,205.59, 996,631.57 and 399,908.77 is: 551,867.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,205.59 : 996,631.57 = 399,908.77 : x
  2. Step 2: Convert to fraction form
    722,205.59/996,631.57 = 399,908.77/x
  3. Step 3: Cross multiply
    722,205.59x = 996,631.57 × 399,908.77
  4. Step 4: Simplify right side
    722,205.59x = 398,561,703,310.18
  5. Step 5: Solve for x
    x = 398,561,703,310.18/722,205.59
  6. Step 6: Final answer
    x = 551,867.38

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1.5x scale

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.