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Finding the Fourth Proportional to 993,761.40, 1,489,329.90 and 880,912.20

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Solution

The fourth proportional to 993,761.40, 1,489,329.90 and 880,912.20 is: 1,320,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,761.40 : 1,489,329.90 = 880,912.20 : x
  2. Step 2: Convert to fraction form
    993,761.40/1,489,329.90 = 880,912.20/x
  3. Step 3: Cross multiply
    993,761.40x = 1,489,329.90 × 880,912.20
  4. Step 4: Simplify right side
    993,761.40x = 1,311,968,878,734.78
  5. Step 5: Solve for x
    x = 1,311,968,878,734.78/993,761.40
  6. Step 6: Final answer
    x = 1,320,205.11

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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.