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Finding the Fourth Proportional to 663,436.80, 995,284.80 and 264,009.60

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Solution

The fourth proportional to 663,436.80, 995,284.80 and 264,009.60 is: 396,065.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,436.80 : 995,284.80 = 264,009.60 : x
  2. Step 2: Convert to fraction form
    663,436.80/995,284.80 = 264,009.60/x
  3. Step 3: Cross multiply
    663,436.80x = 995,284.80 × 264,009.60
  4. Step 4: Simplify right side
    663,436.80x = 262,764,741,934.08
  5. Step 5: Solve for x
    x = 262,764,741,934.08/663,436.80
  6. Step 6: Final answer
    x = 396,065.97

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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.