Home / 679,290.30-1,019,032.65-206,012.70

Finding the Fourth Proportional to 679,290.30, 1,019,032.65 and 206,012.70

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Solution

The fourth proportional to 679,290.30, 1,019,032.65 and 206,012.70 is: 309,048.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,290.30 : 1,019,032.65 = 206,012.70 : x
  2. Step 2: Convert to fraction form
    679,290.30/1,019,032.65 = 206,012.70/x
  3. Step 3: Cross multiply
    679,290.30x = 1,019,032.65 × 206,012.70
  4. Step 4: Simplify right side
    679,290.30x = 209,933,667,614.66
  5. Step 5: Solve for x
    x = 209,933,667,614.66/679,290.30
  6. Step 6: Final answer
    x = 309,048.53

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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.