Home / 639,814.50-959,719.01-260,650.67

Finding the Fourth Proportional to 639,814.50, 959,719.01 and 260,650.67

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Solution

The fourth proportional to 639,814.50, 959,719.01 and 260,650.67 is: 390,974.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,814.50 : 959,719.01 = 260,650.67 : x
  2. Step 2: Convert to fraction form
    639,814.50/959,719.01 = 260,650.67/x
  3. Step 3: Cross multiply
    639,814.50x = 959,719.01 × 260,650.67
  4. Step 4: Simplify right side
    639,814.50x = 250,151,396,866.39
  5. Step 5: Solve for x
    x = 250,151,396,866.39/639,814.50
  6. Step 6: Final answer
    x = 390,974.88

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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.