Home / 809,580.20-1,215,104.70-410,498.60

Finding the Fourth Proportional to 809,580.20, 1,215,104.70 and 410,498.60

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Solution

The fourth proportional to 809,580.20, 1,215,104.70 and 410,498.60 is: 616,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,580.20 : 1,215,104.70 = 410,498.60 : x
  2. Step 2: Convert to fraction form
    809,580.20/1,215,104.70 = 410,498.60/x
  3. Step 3: Cross multiply
    809,580.20x = 1,215,104.70 × 410,498.60
  4. Step 4: Simplify right side
    809,580.20x = 498,798,778,203.42
  5. Step 5: Solve for x
    x = 498,798,778,203.42/809,580.20
  6. Step 6: Final answer
    x = 616,120.28

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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.