Home / 654,719.20-982,120.30-205,457.80

Finding the Fourth Proportional to 654,719.20, 982,120.30 and 205,457.80

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Solution

The fourth proportional to 654,719.20, 982,120.30 and 205,457.80 is: 308,199.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,719.20 : 982,120.30 = 205,457.80 : x
  2. Step 2: Convert to fraction form
    654,719.20/982,120.30 = 205,457.80/x
  3. Step 3: Cross multiply
    654,719.20x = 982,120.30 × 205,457.80
  4. Step 4: Simplify right side
    654,719.20x = 201,784,270,749.09
  5. Step 5: Solve for x
    x = 201,784,270,749.09/654,719.20
  6. Step 6: Final answer
    x = 308,199.72

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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.