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Finding the Fourth Proportional to 518,572.40, 777,858.60 and 489,047.90

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Solution

The fourth proportional to 518,572.40, 777,858.60 and 489,047.90 is: 733,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,572.40 : 777,858.60 = 489,047.90 : x
  2. Step 2: Convert to fraction form
    518,572.40/777,858.60 = 489,047.90/x
  3. Step 3: Cross multiply
    518,572.40x = 777,858.60 × 489,047.90
  4. Step 4: Simplify right side
    518,572.40x = 380,410,114,826.94
  5. Step 5: Solve for x
    x = 380,410,114,826.94/518,572.40
  6. Step 6: Final answer
    x = 733,571.85

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Similar ratio
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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.