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Finding the Fourth Proportional to 491,305.82, 677,994.18 and 276,445.76

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Solution

The fourth proportional to 491,305.82, 677,994.18 and 276,445.76 is: 381,490.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,305.82 : 677,994.18 = 276,445.76 : x
  2. Step 2: Convert to fraction form
    491,305.82/677,994.18 = 276,445.76/x
  3. Step 3: Cross multiply
    491,305.82x = 677,994.18 × 276,445.76
  4. Step 4: Simplify right side
    491,305.82x = 187,428,616,365.68
  5. Step 5: Solve for x
    x = 187,428,616,365.68/491,305.82
  6. Step 6: Final answer
    x = 381,490.73

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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.