Home / 679,723.74-1,019,519.49-206,413.20

Finding the Fourth Proportional to 679,723.74, 1,019,519.49 and 206,413.20

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Solution

The fourth proportional to 679,723.74, 1,019,519.49 and 206,413.20 is: 309,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,723.74 : 1,019,519.49 = 206,413.20 : x
  2. Step 2: Convert to fraction form
    679,723.74/1,019,519.49 = 206,413.20/x
  3. Step 3: Cross multiply
    679,723.74x = 1,019,519.49 × 206,413.20
  4. Step 4: Simplify right side
    679,723.74x = 210,442,280,393.27
  5. Step 5: Solve for x
    x = 210,442,280,393.27/679,723.74
  6. Step 6: Final answer
    x = 309,599.72

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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.