Home / 491,389.43-678,115.23-276,533.07

Finding the Fourth Proportional to 491,389.43, 678,115.23 and 276,533.07

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Solution

The fourth proportional to 491,389.43, 678,115.23 and 276,533.07 is: 381,614.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,389.43 : 678,115.23 = 276,533.07 : x
  2. Step 2: Convert to fraction form
    491,389.43/678,115.23 = 276,533.07/x
  3. Step 3: Cross multiply
    491,389.43x = 678,115.23 × 276,533.07
  4. Step 4: Simplify right side
    491,389.43x = 187,521,286,365.66
  5. Step 5: Solve for x
    x = 187,521,286,365.66/491,389.43
  6. Step 6: Final answer
    x = 381,614.41

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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.