Home / 679,725.72-1,019,590.20-206,414.64

Finding the Fourth Proportional to 679,725.72, 1,019,590.20 and 206,414.64

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Solution

The fourth proportional to 679,725.72, 1,019,590.20 and 206,414.64 is: 309,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,725.72 : 1,019,590.20 = 206,414.64 : x
  2. Step 2: Convert to fraction form
    679,725.72/1,019,590.20 = 206,414.64/x
  3. Step 3: Cross multiply
    679,725.72x = 1,019,590.20 × 206,414.64
  4. Step 4: Simplify right side
    679,725.72x = 210,458,344,080.53
  5. Step 5: Solve for x
    x = 210,458,344,080.53/679,725.72
  6. Step 6: Final answer
    x = 309,622.45

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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.