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Finding the Fourth Proportional to 526,639.46, 789,578.48 and 312,900.44

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Solution

The fourth proportional to 526,639.46, 789,578.48 and 312,900.44 is: 469,124.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,639.46 : 789,578.48 = 312,900.44 : x
  2. Step 2: Convert to fraction form
    526,639.46/789,578.48 = 312,900.44/x
  3. Step 3: Cross multiply
    526,639.46x = 789,578.48 × 312,900.44
  4. Step 4: Simplify right side
    526,639.46x = 247,059,450,640.89
  5. Step 5: Solve for x
    x = 247,059,450,640.89/526,639.46
  6. Step 6: Final answer
    x = 469,124.46

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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.