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Finding the Fourth Proportional to 492,362.30, 738,543.45 and 489,251.90

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Solution

The fourth proportional to 492,362.30, 738,543.45 and 489,251.90 is: 733,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,362.30 : 738,543.45 = 489,251.90 : x
  2. Step 2: Convert to fraction form
    492,362.30/738,543.45 = 489,251.90/x
  3. Step 3: Cross multiply
    492,362.30x = 738,543.45 × 489,251.90
  4. Step 4: Simplify right side
    492,362.30x = 361,333,786,145.06
  5. Step 5: Solve for x
    x = 361,333,786,145.06/492,362.30
  6. Step 6: Final answer
    x = 733,877.85

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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.