Home / 412,917.74-618,958.34-279,811.45

Finding the Fourth Proportional to 412,917.74, 618,958.34 and 279,811.45

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Solution

The fourth proportional to 412,917.74, 618,958.34 and 279,811.45 is: 419,433.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,917.74 : 618,958.34 = 279,811.45 : x
  2. Step 2: Convert to fraction form
    412,917.74/618,958.34 = 279,811.45/x
  3. Step 3: Cross multiply
    412,917.74x = 618,958.34 × 279,811.45
  4. Step 4: Simplify right side
    412,917.74x = 173,191,630,604.99
  5. Step 5: Solve for x
    x = 173,191,630,604.99/412,917.74
  6. Step 6: Final answer
    x = 419,433.74

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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.