Home / 679,423.68-1,019,139.30-206,109.54

Finding the Fourth Proportional to 679,423.68, 1,019,139.30 and 206,109.54

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Solution

The fourth proportional to 679,423.68, 1,019,139.30 and 206,109.54 is: 309,165.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,423.68 : 1,019,139.30 = 206,109.54 : x
  2. Step 2: Convert to fraction form
    679,423.68/1,019,139.30 = 206,109.54/x
  3. Step 3: Cross multiply
    679,423.68x = 1,019,139.30 × 206,109.54
  4. Step 4: Simplify right side
    679,423.68x = 210,054,332,318.92
  5. Step 5: Solve for x
    x = 210,054,332,318.92/679,423.68
  6. Step 6: Final answer
    x = 309,165.46

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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.