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Finding the Fourth Proportional to 521,244.32, 780,392.07 and 331,233.71

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Solution

The fourth proportional to 521,244.32, 780,392.07 and 331,233.71 is: 495,913.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,244.32 : 780,392.07 = 331,233.71 : x
  2. Step 2: Convert to fraction form
    521,244.32/780,392.07 = 331,233.71/x
  3. Step 3: Cross multiply
    521,244.32x = 780,392.07 × 331,233.71
  4. Step 4: Simplify right side
    521,244.32x = 258,492,156,698.72
  5. Step 5: Solve for x
    x = 258,492,156,698.72/521,244.32
  6. Step 6: Final answer
    x = 495,913.62

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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.