Home / 679,717.11-1,019,509.41-206,406.57

Finding the Fourth Proportional to 679,717.11, 1,019,509.41 and 206,406.57

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Solution

The fourth proportional to 679,717.11, 1,019,509.41 and 206,406.57 is: 309,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,717.11 : 1,019,509.41 = 206,406.57 : x
  2. Step 2: Convert to fraction form
    679,717.11/1,019,509.41 = 206,406.57/x
  3. Step 3: Cross multiply
    679,717.11x = 1,019,509.41 × 206,406.57
  4. Step 4: Simplify right side
    679,717.11x = 210,433,440,400.82
  5. Step 5: Solve for x
    x = 210,433,440,400.82/679,717.11
  6. Step 6: Final answer
    x = 309,589.74

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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.