Home / 494,057.36-681,833.76-279,217.28

Finding the Fourth Proportional to 494,057.36, 681,833.76 and 279,217.28

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Solution

The fourth proportional to 494,057.36, 681,833.76 and 279,217.28 is: 385,339.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,057.36 : 681,833.76 = 279,217.28 : x
  2. Step 2: Convert to fraction form
    494,057.36/681,833.76 = 279,217.28/x
  3. Step 3: Cross multiply
    494,057.36x = 681,833.76 × 279,217.28
  4. Step 4: Simplify right side
    494,057.36x = 190,379,767,879.37
  5. Step 5: Solve for x
    x = 190,379,767,879.37/494,057.36
  6. Step 6: Final answer
    x = 385,339.40

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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.