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Finding the Fourth Proportional to 625,198.21, 862,774.45 and 338,718.31

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Solution

The fourth proportional to 625,198.21, 862,774.45 and 338,718.31 is: 467,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,198.21 : 862,774.45 = 338,718.31 : x
  2. Step 2: Convert to fraction form
    625,198.21/862,774.45 = 338,718.31/x
  3. Step 3: Cross multiply
    625,198.21x = 862,774.45 × 338,718.31
  4. Step 4: Simplify right side
    625,198.21x = 292,237,500,611.45
  5. Step 5: Solve for x
    x = 292,237,500,611.45/625,198.21
  6. Step 6: Final answer
    x = 467,431.76

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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.