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Finding the Fourth Proportional to 515,616.74, 773,413.22 and 303,728.80

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Solution

The fourth proportional to 515,616.74, 773,413.22 and 303,728.80 is: 455,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,616.74 : 773,413.22 = 303,728.80 : x
  2. Step 2: Convert to fraction form
    515,616.74/773,413.22 = 303,728.80/x
  3. Step 3: Cross multiply
    515,616.74x = 773,413.22 × 303,728.80
  4. Step 4: Simplify right side
    515,616.74x = 234,907,870,940.83
  5. Step 5: Solve for x
    x = 234,907,870,940.83/515,616.74
  6. Step 6: Final answer
    x = 455,586.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.