Home / 809,636.40-1,215,232.20-410,727.60

Finding the Fourth Proportional to 809,636.40, 1,215,232.20 and 410,727.60

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Solution

The fourth proportional to 809,636.40, 1,215,232.20 and 410,727.60 is: 616,485.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,636.40 : 1,215,232.20 = 410,727.60 : x
  2. Step 2: Convert to fraction form
    809,636.40/1,215,232.20 = 410,727.60/x
  3. Step 3: Cross multiply
    809,636.40x = 1,215,232.20 × 410,727.60
  4. Step 4: Simplify right side
    809,636.40x = 499,129,404,948.72
  5. Step 5: Solve for x
    x = 499,129,404,948.72/809,636.40
  6. Step 6: Final answer
    x = 616,485.88

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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.