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Finding the Fourth Proportional to 491,308.32, 677,997.63 and 276,448.26

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Solution

The fourth proportional to 491,308.32, 677,997.63 and 276,448.26 is: 381,494.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,308.32 : 677,997.63 = 276,448.26 : x
  2. Step 2: Convert to fraction form
    491,308.32/677,997.63 = 276,448.26/x
  3. Step 3: Cross multiply
    491,308.32x = 677,997.63 × 276,448.26
  4. Step 4: Simplify right side
    491,308.32x = 187,431,265,097.62
  5. Step 5: Solve for x
    x = 187,431,265,097.62/491,308.32
  6. Step 6: Final answer
    x = 381,494.18

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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.