Home / 491,021.28-677,561.48-276,156.76

Finding the Fourth Proportional to 491,021.28, 677,561.48 and 276,156.76

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Solution

The fourth proportional to 491,021.28, 677,561.48 and 276,156.76 is: 381,069.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,021.28 : 677,561.48 = 276,156.76 : x
  2. Step 2: Convert to fraction form
    491,021.28/677,561.48 = 276,156.76/x
  3. Step 3: Cross multiply
    491,021.28x = 677,561.48 × 276,156.76
  4. Step 4: Simplify right side
    491,021.28x = 187,113,183,017.61
  5. Step 5: Solve for x
    x = 187,113,183,017.61/491,021.28
  6. Step 6: Final answer
    x = 381,069.40

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Double scale
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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.