Home / 679,896.40-1,019,990.40-206,629.60

Finding the Fourth Proportional to 679,896.40, 1,019,990.40 and 206,629.60

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Solution

The fourth proportional to 679,896.40, 1,019,990.40 and 206,629.60 is: 309,988.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,896.40 : 1,019,990.40 = 206,629.60 : x
  2. Step 2: Convert to fraction form
    679,896.40/1,019,990.40 = 206,629.60/x
  3. Step 3: Cross multiply
    679,896.40x = 1,019,990.40 × 206,629.60
  4. Step 4: Simplify right side
    679,896.40x = 210,760,208,355.84
  5. Step 5: Solve for x
    x = 210,760,208,355.84/679,896.40
  6. Step 6: Final answer
    x = 309,988.71

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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.