Home / 721,733.29-995,961.32-399,413.23

Finding the Fourth Proportional to 721,733.29, 995,961.32 and 399,413.23

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Solution

The fourth proportional to 721,733.29, 995,961.32 and 399,413.23 is: 551,173.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,733.29 : 995,961.32 = 399,413.23 : x
  2. Step 2: Convert to fraction form
    721,733.29/995,961.32 = 399,413.23/x
  3. Step 3: Cross multiply
    721,733.29x = 995,961.32 × 399,413.23
  4. Step 4: Simplify right side
    721,733.29x = 397,800,124,787.09
  5. Step 5: Solve for x
    x = 397,800,124,787.09/721,733.29
  6. Step 6: Final answer
    x = 551,173.31

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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.