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Finding the Fourth Proportional to 639,797.96, 882,921.52 and 349,413.50

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Solution

The fourth proportional to 639,797.96, 882,921.52 and 349,413.50 is: 482,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,797.96 : 882,921.52 = 349,413.50 : x
  2. Step 2: Convert to fraction form
    639,797.96/882,921.52 = 349,413.50/x
  3. Step 3: Cross multiply
    639,797.96x = 882,921.52 × 349,413.50
  4. Step 4: Simplify right side
    639,797.96x = 308,504,698,528.52
  5. Step 5: Solve for x
    x = 308,504,698,528.52/639,797.96
  6. Step 6: Final answer
    x = 482,190.81

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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.