Home / 911,998.64-1,368,144.96-280,912.16

Finding the Fourth Proportional to 911,998.64, 1,368,144.96 and 280,912.16

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Solution

The fourth proportional to 911,998.64, 1,368,144.96 and 280,912.16 is: 421,413.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,998.64 : 1,368,144.96 = 280,912.16 : x
  2. Step 2: Convert to fraction form
    911,998.64/1,368,144.96 = 280,912.16/x
  3. Step 3: Cross multiply
    911,998.64x = 1,368,144.96 × 280,912.16
  4. Step 4: Simplify right side
    911,998.64x = 384,328,555,906.71
  5. Step 5: Solve for x
    x = 384,328,555,906.71/911,998.64
  6. Step 6: Final answer
    x = 421,413.52

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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.