Home / 685,279.80-1,025,951.40-419,559.30

Finding the Fourth Proportional to 685,279.80, 1,025,951.40 and 419,559.30

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Solution

The fourth proportional to 685,279.80, 1,025,951.40 and 419,559.30 is: 628,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,279.80 : 1,025,951.40 = 419,559.30 : x
  2. Step 2: Convert to fraction form
    685,279.80/1,025,951.40 = 419,559.30/x
  3. Step 3: Cross multiply
    685,279.80x = 1,025,951.40 × 419,559.30
  4. Step 4: Simplify right side
    685,279.80x = 430,447,451,218.02
  5. Step 5: Solve for x
    x = 430,447,451,218.02/685,279.80
  6. Step 6: Final answer
    x = 628,133.87

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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.