Home / 1,317,630.80-1,976,446.20-320,358.80

Finding the Fourth Proportional to 1,317,630.80, 1,976,446.20 and 320,358.80

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Solution

The fourth proportional to 1,317,630.80, 1,976,446.20 and 320,358.80 is: 480,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,630.80 : 1,976,446.20 = 320,358.80 : x
  2. Step 2: Convert to fraction form
    1,317,630.80/1,976,446.20 = 320,358.80/x
  3. Step 3: Cross multiply
    1,317,630.80x = 1,976,446.20 × 320,358.80
  4. Step 4: Simplify right side
    1,317,630.80x = 633,171,932,896.56
  5. Step 5: Solve for x
    x = 633,171,932,896.56/1,317,630.80
  6. Step 6: Final answer
    x = 480,538.20

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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.