Home / 679,898.40-1,019,993.40-206,631.60

Finding the Fourth Proportional to 679,898.40, 1,019,993.40 and 206,631.60

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Solution

The fourth proportional to 679,898.40, 1,019,993.40 and 206,631.60 is: 309,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,898.40 : 1,019,993.40 = 206,631.60 : x
  2. Step 2: Convert to fraction form
    679,898.40/1,019,993.40 = 206,631.60/x
  3. Step 3: Cross multiply
    679,898.40x = 1,019,993.40 × 206,631.60
  4. Step 4: Simplify right side
    679,898.40x = 210,762,868,231.44
  5. Step 5: Solve for x
    x = 210,762,868,231.44/679,898.40
  6. Step 6: Final answer
    x = 309,991.71

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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.