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Finding the Fourth Proportional to 890,610.32, 1,335,785.84 and 259,354.64

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Solution

The fourth proportional to 890,610.32, 1,335,785.84 and 259,354.64 is: 388,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,610.32 : 1,335,785.84 = 259,354.64 : x
  2. Step 2: Convert to fraction form
    890,610.32/1,335,785.84 = 259,354.64/x
  3. Step 3: Cross multiply
    890,610.32x = 1,335,785.84 × 259,354.64
  4. Step 4: Simplify right side
    890,610.32x = 346,442,255,650.30
  5. Step 5: Solve for x
    x = 346,442,255,650.30/890,610.32
  6. Step 6: Final answer
    x = 388,994.21

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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.