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Finding the Fourth Proportional to 492,322.30, 738,483.45 and 489,211.90

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Solution

The fourth proportional to 492,322.30, 738,483.45 and 489,211.90 is: 733,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,322.30 : 738,483.45 = 489,211.90 : x
  2. Step 2: Convert to fraction form
    492,322.30/738,483.45 = 489,211.90/x
  3. Step 3: Cross multiply
    492,322.30x = 738,483.45 × 489,211.90
  4. Step 4: Simplify right side
    492,322.30x = 361,274,891,693.06
  5. Step 5: Solve for x
    x = 361,274,891,693.06/492,322.30
  6. Step 6: Final answer
    x = 733,817.85

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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.