Home / 739,937.75-1,021,121.39-400,413.29

Finding the Fourth Proportional to 739,937.75, 1,021,121.39 and 400,413.29

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Solution

The fourth proportional to 739,937.75, 1,021,121.39 and 400,413.29 is: 552,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,937.75 : 1,021,121.39 = 400,413.29 : x
  2. Step 2: Convert to fraction form
    739,937.75/1,021,121.39 = 400,413.29/x
  3. Step 3: Cross multiply
    739,937.75x = 1,021,121.39 × 400,413.29
  4. Step 4: Simplify right side
    739,937.75x = 408,870,573,257.21
  5. Step 5: Solve for x
    x = 408,870,573,257.21/739,937.75
  6. Step 6: Final answer
    x = 552,574.29

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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.