Home / 1,219,047.88-1,821,158.21-789,080.68

Finding the Fourth Proportional to 1,219,047.88, 1,821,158.21 and 789,080.68

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Solution

The fourth proportional to 1,219,047.88, 1,821,158.21 and 789,080.68 is: 1,178,822.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,047.88 : 1,821,158.21 = 789,080.68 : x
  2. Step 2: Convert to fraction form
    1,219,047.88/1,821,158.21 = 789,080.68/x
  3. Step 3: Cross multiply
    1,219,047.88x = 1,821,158.21 × 789,080.68
  4. Step 4: Simplify right side
    1,219,047.88x = 1,437,040,758,734.38
  5. Step 5: Solve for x
    x = 1,437,040,758,734.38/1,219,047.88
  6. Step 6: Final answer
    x = 1,178,822.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.