Home / 679,617.60-1,019,167.20-206,145.60

Finding the Fourth Proportional to 679,617.60, 1,019,167.20 and 206,145.60

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Solution

The fourth proportional to 679,617.60, 1,019,167.20 and 206,145.60 is: 309,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,617.60 : 1,019,167.20 = 206,145.60 : x
  2. Step 2: Convert to fraction form
    679,617.60/1,019,167.20 = 206,145.60/x
  3. Step 3: Cross multiply
    679,617.60x = 1,019,167.20 × 206,145.60
  4. Step 4: Simplify right side
    679,617.60x = 210,096,833,944.32
  5. Step 5: Solve for x
    x = 210,096,833,944.32/679,617.60
  6. Step 6: Final answer
    x = 309,139.78

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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.