Home / 491,365.32-678,076.20-276,505.26

Finding the Fourth Proportional to 491,365.32, 678,076.20 and 276,505.26

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Solution

The fourth proportional to 491,365.32, 678,076.20 and 276,505.26 is: 381,572.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,365.32 : 678,076.20 = 276,505.26 : x
  2. Step 2: Convert to fraction form
    491,365.32/678,076.20 = 276,505.26/x
  3. Step 3: Cross multiply
    491,365.32x = 678,076.20 × 276,505.26
  4. Step 4: Simplify right side
    491,365.32x = 187,491,635,980.81
  5. Step 5: Solve for x
    x = 187,491,635,980.81/491,365.32
  6. Step 6: Final answer
    x = 381,572.79

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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.