Home / 1,288,336.40-1,932,504.60-809,334.80

Finding the Fourth Proportional to 1,288,336.40, 1,932,504.60 and 809,334.80

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Solution

The fourth proportional to 1,288,336.40, 1,932,504.60 and 809,334.80 is: 1,214,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,336.40 : 1,932,504.60 = 809,334.80 : x
  2. Step 2: Convert to fraction form
    1,288,336.40/1,932,504.60 = 809,334.80/x
  3. Step 3: Cross multiply
    1,288,336.40x = 1,932,504.60 × 809,334.80
  4. Step 4: Simplify right side
    1,288,336.40x = 1,564,043,223,940.08
  5. Step 5: Solve for x
    x = 1,564,043,223,940.08/1,288,336.40
  6. Step 6: Final answer
    x = 1,214,002.20

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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.