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Finding the Fourth Proportional to 491,182.55, 677,830.77 and 276,322.56

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Solution

The fourth proportional to 491,182.55, 677,830.77 and 276,322.56 is: 381,324.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,182.55 : 677,830.77 = 276,322.56 : x
  2. Step 2: Convert to fraction form
    491,182.55/677,830.77 = 276,322.56/x
  3. Step 3: Cross multiply
    491,182.55x = 677,830.77 × 276,322.56
  4. Step 4: Simplify right side
    491,182.55x = 187,299,933,613.17
  5. Step 5: Solve for x
    x = 187,299,933,613.17/491,182.55
  6. Step 6: Final answer
    x = 381,324.49

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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.