Home / 694,559.80-1,041,839.70-428,620.60

Finding the Fourth Proportional to 694,559.80, 1,041,839.70 and 428,620.60

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Solution

The fourth proportional to 694,559.80, 1,041,839.70 and 428,620.60 is: 642,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,559.80 : 1,041,839.70 = 428,620.60 : x
  2. Step 2: Convert to fraction form
    694,559.80/1,041,839.70 = 428,620.60/x
  3. Step 3: Cross multiply
    694,559.80x = 1,041,839.70 × 428,620.60
  4. Step 4: Simplify right side
    694,559.80x = 446,553,957,317.82
  5. Step 5: Solve for x
    x = 446,553,957,317.82/694,559.80
  6. Step 6: Final answer
    x = 642,930.90

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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.