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Finding the Fourth Proportional to 491,556.56, 678,349.56 and 276,699.92

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Solution

The fourth proportional to 491,556.56, 678,349.56 and 276,699.92 is: 381,846.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,556.56 : 678,349.56 = 276,699.92 : x
  2. Step 2: Convert to fraction form
    491,556.56/678,349.56 = 276,699.92/x
  3. Step 3: Cross multiply
    491,556.56x = 678,349.56 × 276,699.92
  4. Step 4: Simplify right side
    491,556.56x = 187,699,268,984.04
  5. Step 5: Solve for x
    x = 187,699,268,984.04/491,556.56
  6. Step 6: Final answer
    x = 381,846.74

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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.