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Finding the Fourth Proportional to 492,486.55, 738,729.83 and 489,376.15

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Solution

The fourth proportional to 492,486.55, 738,729.83 and 489,376.15 is: 734,064.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,486.55 : 738,729.83 = 489,376.15 : x
  2. Step 2: Convert to fraction form
    492,486.55/738,729.83 = 489,376.15/x
  3. Step 3: Cross multiply
    492,486.55x = 738,729.83 × 489,376.15
  4. Step 4: Simplify right side
    492,486.55x = 361,516,757,648.67
  5. Step 5: Solve for x
    x = 361,516,757,648.67/492,486.55
  6. Step 6: Final answer
    x = 734,064.23

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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.