Home / 679,678.31-1,019,451.51-206,367.77

Finding the Fourth Proportional to 679,678.31, 1,019,451.51 and 206,367.77

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Solution

The fourth proportional to 679,678.31, 1,019,451.51 and 206,367.77 is: 309,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,678.31 : 1,019,451.51 = 206,367.77 : x
  2. Step 2: Convert to fraction form
    679,678.31/1,019,451.51 = 206,367.77/x
  3. Step 3: Cross multiply
    679,678.31x = 1,019,451.51 × 206,367.77
  4. Step 4: Simplify right side
    679,678.31x = 210,381,929,644.58
  5. Step 5: Solve for x
    x = 210,381,929,644.58/679,678.31
  6. Step 6: Final answer
    x = 309,531.62

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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.