Home / 621,204.24-856,125-451,143.12

Finding the Fourth Proportional to 621,204.24, 856,125 and 451,143.12

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Solution

The fourth proportional to 621,204.24, 856,125 and 451,143.12 is: 621,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,204.24 : 856,125 = 451,143.12 : x
  2. Step 2: Convert to fraction form
    621,204.24/856,125 = 451,143.12/x
  3. Step 3: Cross multiply
    621,204.24x = 856,125 × 451,143.12
  4. Step 4: Simplify right side
    621,204.24x = 386,234,903,610
  5. Step 5: Solve for x
    x = 386,234,903,610/621,204.24
  6. Step 6: Final answer
    x = 621,751.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.