Home / 1,686,639.72-2,529,917.54-789,085.69

Finding the Fourth Proportional to 1,686,639.72, 2,529,917.54 and 789,085.69

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Solution

The fourth proportional to 1,686,639.72, 2,529,917.54 and 789,085.69 is: 1,183,608.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,639.72 : 2,529,917.54 = 789,085.69 : x
  2. Step 2: Convert to fraction form
    1,686,639.72/2,529,917.54 = 789,085.69/x
  3. Step 3: Cross multiply
    1,686,639.72x = 2,529,917.54 × 789,085.69
  4. Step 4: Simplify right side
    1,686,639.72x = 1,996,321,727,694.00
  5. Step 5: Solve for x
    x = 1,996,321,727,694.00/1,686,639.72
  6. Step 6: Final answer
    x = 1,183,608.87

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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.