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Finding the Fourth Proportional to 989,388.80, 1,482,093 and 749,912.30

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Solution

The fourth proportional to 989,388.80, 1,482,093 and 749,912.30 is: 1,123,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,388.80 : 1,482,093 = 749,912.30 : x
  2. Step 2: Convert to fraction form
    989,388.80/1,482,093 = 749,912.30/x
  3. Step 3: Cross multiply
    989,388.80x = 1,482,093 × 749,912.30
  4. Step 4: Simplify right side
    989,388.80x = 1,111,439,770,443.90
  5. Step 5: Solve for x
    x = 1,111,439,770,443.90/989,388.80
  6. Step 6: Final answer
    x = 1,123,359.97

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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.