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Finding the Fourth Proportional to 802,955.80, 1,203,413.10 and 329,105.80

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Solution

The fourth proportional to 802,955.80, 1,203,413.10 and 329,105.80 is: 493,240.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,955.80 : 1,203,413.10 = 329,105.80 : x
  2. Step 2: Convert to fraction form
    802,955.80/1,203,413.10 = 329,105.80/x
  3. Step 3: Cross multiply
    802,955.80x = 1,203,413.10 × 329,105.80
  4. Step 4: Simplify right side
    802,955.80x = 396,050,231,005.98
  5. Step 5: Solve for x
    x = 396,050,231,005.98/802,955.80
  6. Step 6: Final answer
    x = 493,240.39

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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.