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Finding the Fourth Proportional to 491,253.60, 677,954.16 and 276,382.56

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Solution

The fourth proportional to 491,253.60, 677,954.16 and 276,382.56 is: 381,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,253.60 : 677,954.16 = 276,382.56 : x
  2. Step 2: Convert to fraction form
    491,253.60/677,954.16 = 276,382.56/x
  3. Step 3: Cross multiply
    491,253.60x = 677,954.16 × 276,382.56
  4. Step 4: Simplify right side
    491,253.60x = 187,374,706,303.45
  5. Step 5: Solve for x
    x = 187,374,706,303.45/491,253.60
  6. Step 6: Final answer
    x = 381,421.54

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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.