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Finding the Fourth Proportional to 808,714.22, 1,211,873.28 and 328,357.90

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Solution

The fourth proportional to 808,714.22, 1,211,873.28 and 328,357.90 is: 492,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,714.22 : 1,211,873.28 = 328,357.90 : x
  2. Step 2: Convert to fraction form
    808,714.22/1,211,873.28 = 328,357.90/x
  3. Step 3: Cross multiply
    808,714.22x = 1,211,873.28 × 328,357.90
  4. Step 4: Simplify right side
    808,714.22x = 397,928,165,286.91
  5. Step 5: Solve for x
    x = 397,928,165,286.91/808,714.22
  6. Step 6: Final answer
    x = 492,050.41

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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.