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Finding the Fourth Proportional to 890,626.32, 1,335,809.88 and 259,370.64

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Solution

The fourth proportional to 890,626.32, 1,335,809.88 and 259,370.64 is: 389,018.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,626.32 : 1,335,809.88 = 259,370.64 : x
  2. Step 2: Convert to fraction form
    890,626.32/1,335,809.88 = 259,370.64/x
  3. Step 3: Cross multiply
    890,626.32x = 1,335,809.88 × 259,370.64
  4. Step 4: Simplify right side
    890,626.32x = 346,469,863,493.92
  5. Step 5: Solve for x
    x = 346,469,863,493.92/890,626.32
  6. Step 6: Final answer
    x = 389,018.22

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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.