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Finding the Fourth Proportional to 492,486.30, 738,729.45 and 489,375.90

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Solution

The fourth proportional to 492,486.30, 738,729.45 and 489,375.90 is: 734,063.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,486.30 : 738,729.45 = 489,375.90 : x
  2. Step 2: Convert to fraction form
    492,486.30/738,729.45 = 489,375.90/x
  3. Step 3: Cross multiply
    492,486.30x = 738,729.45 × 489,375.90
  4. Step 4: Simplify right side
    492,486.30x = 361,516,389,450.26
  5. Step 5: Solve for x
    x = 361,516,389,450.26/492,486.30
  6. Step 6: Final answer
    x = 734,063.85

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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.