Home / 679,561.45-1,019,348.21-206,246.72

Finding the Fourth Proportional to 679,561.45, 1,019,348.21 and 206,246.72

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Solution

The fourth proportional to 679,561.45, 1,019,348.21 and 206,246.72 is: 309,371.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,561.45 : 1,019,348.21 = 206,246.72 : x
  2. Step 2: Convert to fraction form
    679,561.45/1,019,348.21 = 206,246.72/x
  3. Step 3: Cross multiply
    679,561.45x = 1,019,348.21 × 206,246.72
  4. Step 4: Simplify right side
    679,561.45x = 210,237,227,914.36
  5. Step 5: Solve for x
    x = 210,237,227,914.36/679,561.45
  6. Step 6: Final answer
    x = 309,371.92

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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.