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Finding the Fourth Proportional to 1,993,791.04, 2,989,947.84 and 714,199.20

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Solution

The fourth proportional to 1,993,791.04, 2,989,947.84 and 714,199.20 is: 1,071,034.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,791.04 : 2,989,947.84 = 714,199.20 : x
  2. Step 2: Convert to fraction form
    1,993,791.04/2,989,947.84 = 714,199.20/x
  3. Step 3: Cross multiply
    1,993,791.04x = 2,989,947.84 × 714,199.20
  4. Step 4: Simplify right side
    1,993,791.04x = 2,135,418,355,369.73
  5. Step 5: Solve for x
    x = 2,135,418,355,369.73/1,993,791.04
  6. Step 6: Final answer
    x = 1,071,034.18

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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.