Home / 984,679.78-1,358,861.79-622,264.72

Finding the Fourth Proportional to 984,679.78, 1,358,861.79 and 622,264.72

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Solution

The fourth proportional to 984,679.78, 1,358,861.79 and 622,264.72 is: 858,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,679.78 : 1,358,861.79 = 622,264.72 : x
  2. Step 2: Convert to fraction form
    984,679.78/1,358,861.79 = 622,264.72/x
  3. Step 3: Cross multiply
    984,679.78x = 1,358,861.79 × 622,264.72
  4. Step 4: Simplify right side
    984,679.78x = 845,571,751,273.05
  5. Step 5: Solve for x
    x = 845,571,751,273.05/984,679.78
  6. Step 6: Final answer
    x = 858,727.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.