Home / 684,777.20-1,025,221.80-647,538.80

Finding the Fourth Proportional to 684,777.20, 1,025,221.80 and 647,538.80

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Solution

The fourth proportional to 684,777.20, 1,025,221.80 and 647,538.80 is: 969,469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,777.20 : 1,025,221.80 = 647,538.80 : x
  2. Step 2: Convert to fraction form
    684,777.20/1,025,221.80 = 647,538.80/x
  3. Step 3: Cross multiply
    684,777.20x = 1,025,221.80 × 647,538.80
  4. Step 4: Simplify right side
    684,777.20x = 663,870,894,105.84
  5. Step 5: Solve for x
    x = 663,870,894,105.84/684,777.20
  6. Step 6: Final answer
    x = 969,469.92

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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.