Home / 654,664.30-981,997.65-205,419.67

Finding the Fourth Proportional to 654,664.30, 981,997.65 and 205,419.67

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Solution

The fourth proportional to 654,664.30, 981,997.65 and 205,419.67 is: 308,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,664.30 : 981,997.65 = 205,419.67 : x
  2. Step 2: Convert to fraction form
    654,664.30/981,997.65 = 205,419.67/x
  3. Step 3: Cross multiply
    654,664.30x = 981,997.65 × 205,419.67
  4. Step 4: Simplify right side
    654,664.30x = 201,721,633,203.78
  5. Step 5: Solve for x
    x = 201,721,633,203.78/654,664.30
  6. Step 6: Final answer
    x = 308,129.88

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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.