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Finding the Fourth Proportional to 856,462.80, 1,283,359.80 and 323,693.20

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Solution

The fourth proportional to 856,462.80, 1,283,359.80 and 323,693.20 is: 485,035.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,462.80 : 1,283,359.80 = 323,693.20 : x
  2. Step 2: Convert to fraction form
    856,462.80/1,283,359.80 = 323,693.20/x
  3. Step 3: Cross multiply
    856,462.80x = 1,283,359.80 × 323,693.20
  4. Step 4: Simplify right side
    856,462.80x = 415,414,840,413.36
  5. Step 5: Solve for x
    x = 415,414,840,413.36/856,462.80
  6. Step 6: Final answer
    x = 485,035.47

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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.