Home / 491,055.28-677,601.46-276,190.76

Finding the Fourth Proportional to 491,055.28, 677,601.46 and 276,190.76

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Solution

The fourth proportional to 491,055.28, 677,601.46 and 276,190.76 is: 381,112.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,055.28 : 677,601.46 = 276,190.76 : x
  2. Step 2: Convert to fraction form
    491,055.28/677,601.46 = 276,190.76/x
  3. Step 3: Cross multiply
    491,055.28x = 677,601.46 × 276,190.76
  4. Step 4: Simplify right side
    491,055.28x = 187,147,262,214.51
  5. Step 5: Solve for x
    x = 187,147,262,214.51/491,055.28
  6. Step 6: Final answer
    x = 381,112.41

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Half scale
Find fourth proportional to 982,110.56, 1,355,202.92 and 552,381.52
Double scale
Find fourth proportional to 491,056.28, 677,602.84 and 276,191.76
Similar ratio
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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.