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Finding the Fourth Proportional to 629,326.91, 868,440.84 and 357,358.88

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Solution

The fourth proportional to 629,326.91, 868,440.84 and 357,358.88 is: 493,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,326.91 : 868,440.84 = 357,358.88 : x
  2. Step 2: Convert to fraction form
    629,326.91/868,440.84 = 357,358.88/x
  3. Step 3: Cross multiply
    629,326.91x = 868,440.84 × 357,358.88
  4. Step 4: Simplify right side
    629,326.91x = 310,345,045,928.66
  5. Step 5: Solve for x
    x = 310,345,045,928.66/629,326.91
  6. Step 6: Final answer
    x = 493,138.05

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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.