Home / 679,900.40-1,019,996.40-206,633.60

Finding the Fourth Proportional to 679,900.40, 1,019,996.40 and 206,633.60

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Solution

The fourth proportional to 679,900.40, 1,019,996.40 and 206,633.60 is: 309,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,900.40 : 1,019,996.40 = 206,633.60 : x
  2. Step 2: Convert to fraction form
    679,900.40/1,019,996.40 = 206,633.60/x
  3. Step 3: Cross multiply
    679,900.40x = 1,019,996.40 × 206,633.60
  4. Step 4: Simplify right side
    679,900.40x = 210,765,528,119.04
  5. Step 5: Solve for x
    x = 210,765,528,119.04/679,900.40
  6. Step 6: Final answer
    x = 309,994.71

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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.