Home / 679,290.80-1,019,033.40-206,013.20

Finding the Fourth Proportional to 679,290.80, 1,019,033.40 and 206,013.20

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Solution

The fourth proportional to 679,290.80, 1,019,033.40 and 206,013.20 is: 309,049.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,290.80 : 1,019,033.40 = 206,013.20 : x
  2. Step 2: Convert to fraction form
    679,290.80/1,019,033.40 = 206,013.20/x
  3. Step 3: Cross multiply
    679,290.80x = 1,019,033.40 × 206,013.20
  4. Step 4: Simplify right side
    679,290.80x = 209,934,331,640.88
  5. Step 5: Solve for x
    x = 209,934,331,640.88/679,290.80
  6. Step 6: Final answer
    x = 309,049.28

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1.5x scale

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.