Home / 679,731.36-1,019,530.82-206,420.82

Finding the Fourth Proportional to 679,731.36, 1,019,530.82 and 206,420.82

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Solution

The fourth proportional to 679,731.36, 1,019,530.82 and 206,420.82 is: 309,611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,731.36 : 1,019,530.82 = 206,420.82 : x
  2. Step 2: Convert to fraction form
    679,731.36/1,019,530.82 = 206,420.82/x
  3. Step 3: Cross multiply
    679,731.36x = 1,019,530.82 × 206,420.82
  4. Step 4: Simplify right side
    679,731.36x = 210,452,388,395.72
  5. Step 5: Solve for x
    x = 210,452,388,395.72/679,731.36
  6. Step 6: Final answer
    x = 309,611.12

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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.