Home / 649,983.76-897,074.46-378,212.56

Finding the Fourth Proportional to 649,983.76, 897,074.46 and 378,212.56

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Solution

The fourth proportional to 649,983.76, 897,074.46 and 378,212.56 is: 521,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,983.76 : 897,074.46 = 378,212.56 : x
  2. Step 2: Convert to fraction form
    649,983.76/897,074.46 = 378,212.56/x
  3. Step 3: Cross multiply
    649,983.76x = 897,074.46 × 378,212.56
  4. Step 4: Simplify right side
    649,983.76x = 339,284,828,027.22
  5. Step 5: Solve for x
    x = 339,284,828,027.22/649,983.76
  6. Step 6: Final answer
    x = 521,989.70

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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.