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Finding the Fourth Proportional to 489,245.40, 733,868.10 and 329,813.10

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Solution

The fourth proportional to 489,245.40, 733,868.10 and 329,813.10 is: 494,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,245.40 : 733,868.10 = 329,813.10 : x
  2. Step 2: Convert to fraction form
    489,245.40/733,868.10 = 329,813.10/x
  3. Step 3: Cross multiply
    489,245.40x = 733,868.10 × 329,813.10
  4. Step 4: Simplify right side
    489,245.40x = 242,039,313,052.11
  5. Step 5: Solve for x
    x = 242,039,313,052.11/489,245.40
  6. Step 6: Final answer
    x = 494,719.65

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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.