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Finding the Fourth Proportional to 852,909.10, 1,279,980.95 and 333,660.91

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Solution

The fourth proportional to 852,909.10, 1,279,980.95 and 333,660.91 is: 500,732.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,909.10 : 1,279,980.95 = 333,660.91 : x
  2. Step 2: Convert to fraction form
    852,909.10/1,279,980.95 = 333,660.91/x
  3. Step 3: Cross multiply
    852,909.10x = 1,279,980.95 × 333,660.91
  4. Step 4: Simplify right side
    852,909.10x = 427,079,608,559.66
  5. Step 5: Solve for x
    x = 427,079,608,559.66/852,909.10
  6. Step 6: Final answer
    x = 500,732.85

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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.