Home / 679,559.79-1,019,342.94-206,249.25

Finding the Fourth Proportional to 679,559.79, 1,019,342.94 and 206,249.25

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Solution

The fourth proportional to 679,559.79, 1,019,342.94 and 206,249.25 is: 309,374.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,559.79 : 1,019,342.94 = 206,249.25 : x
  2. Step 2: Convert to fraction form
    679,559.79/1,019,342.94 = 206,249.25/x
  3. Step 3: Cross multiply
    679,559.79x = 1,019,342.94 × 206,249.25
  4. Step 4: Simplify right side
    679,559.79x = 210,238,716,867.80
  5. Step 5: Solve for x
    x = 210,238,716,867.80/679,559.79
  6. Step 6: Final answer
    x = 309,374.86

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Double scale
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Similar ratio
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1.5x scale

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.