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Finding the Fourth Proportional to 620,524.60, 931,067.60 and 316,761.84

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Solution

The fourth proportional to 620,524.60, 931,067.60 and 316,761.84 is: 475,286.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,524.60 : 931,067.60 = 316,761.84 : x
  2. Step 2: Convert to fraction form
    620,524.60/931,067.60 = 316,761.84/x
  3. Step 3: Cross multiply
    620,524.60x = 931,067.60 × 316,761.84
  4. Step 4: Simplify right side
    620,524.60x = 294,926,684,556.58
  5. Step 5: Solve for x
    x = 294,926,684,556.58/620,524.60
  6. Step 6: Final answer
    x = 475,286.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.