Home / 775,288.12-1,163,329.76-320,217.16

Finding the Fourth Proportional to 775,288.12, 1,163,329.76 and 320,217.16

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Solution

The fourth proportional to 775,288.12, 1,163,329.76 and 320,217.16 is: 480,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,288.12 : 1,163,329.76 = 320,217.16 : x
  2. Step 2: Convert to fraction form
    775,288.12/1,163,329.76 = 320,217.16/x
  3. Step 3: Cross multiply
    775,288.12x = 1,163,329.76 × 320,217.16
  4. Step 4: Simplify right side
    775,288.12x = 372,518,151,890.68
  5. Step 5: Solve for x
    x = 372,518,151,890.68/775,288.12
  6. Step 6: Final answer
    x = 480,489.95

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1.5x scale

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.