Home / 679,520.32-1,019,286.57-206,205.64

Finding the Fourth Proportional to 679,520.32, 1,019,286.57 and 206,205.64

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Solution

The fourth proportional to 679,520.32, 1,019,286.57 and 206,205.64 is: 309,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,520.32 : 1,019,286.57 = 206,205.64 : x
  2. Step 2: Convert to fraction form
    679,520.32/1,019,286.57 = 206,205.64/x
  3. Step 3: Cross multiply
    679,520.32x = 1,019,286.57 × 206,205.64
  4. Step 4: Simplify right side
    679,520.32x = 210,182,639,510.26
  5. Step 5: Solve for x
    x = 210,182,639,510.26/679,520.32
  6. Step 6: Final answer
    x = 309,310.31

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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.