Home / 1,389,902.20-2,082,617.70-789,076.60

Finding the Fourth Proportional to 1,389,902.20, 2,082,617.70 and 789,076.60

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Solution

The fourth proportional to 1,389,902.20, 2,082,617.70 and 789,076.60 is: 1,182,345.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,902.20 : 2,082,617.70 = 789,076.60 : x
  2. Step 2: Convert to fraction form
    1,389,902.20/2,082,617.70 = 789,076.60/x
  3. Step 3: Cross multiply
    1,389,902.20x = 2,082,617.70 × 789,076.60
  4. Step 4: Simplify right side
    1,389,902.20x = 1,643,344,893,815.82
  5. Step 5: Solve for x
    x = 1,643,344,893,815.82/1,389,902.20
  6. Step 6: Final answer
    x = 1,182,345.70

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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.