Home / 839,945.70-1,259,918.55-460,719.90

Finding the Fourth Proportional to 839,945.70, 1,259,918.55 and 460,719.90

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Solution

The fourth proportional to 839,945.70, 1,259,918.55 and 460,719.90 is: 691,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,945.70 : 1,259,918.55 = 460,719.90 : x
  2. Step 2: Convert to fraction form
    839,945.70/1,259,918.55 = 460,719.90/x
  3. Step 3: Cross multiply
    839,945.70x = 1,259,918.55 × 460,719.90
  4. Step 4: Simplify right side
    839,945.70x = 580,469,548,364.15
  5. Step 5: Solve for x
    x = 580,469,548,364.15/839,945.70
  6. Step 6: Final answer
    x = 691,079.85

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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.