Home / 728,615.30-1,092,728.55-255,251.30

Finding the Fourth Proportional to 728,615.30, 1,092,728.55 and 255,251.30

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Solution

The fourth proportional to 728,615.30, 1,092,728.55 and 255,251.30 is: 382,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,615.30 : 1,092,728.55 = 255,251.30 : x
  2. Step 2: Convert to fraction form
    728,615.30/1,092,728.55 = 255,251.30/x
  3. Step 3: Cross multiply
    728,615.30x = 1,092,728.55 × 255,251.30
  4. Step 4: Simplify right side
    728,615.30x = 278,920,382,934.62
  5. Step 5: Solve for x
    x = 278,920,382,934.62/728,615.30
  6. Step 6: Final answer
    x = 382,808.85

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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.