Home / 728,764.20-1,092,627.90-279,311.40

Finding the Fourth Proportional to 728,764.20, 1,092,627.90 and 279,311.40

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Solution

The fourth proportional to 728,764.20, 1,092,627.90 and 279,311.40 is: 418,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,764.20 : 1,092,627.90 = 279,311.40 : x
  2. Step 2: Convert to fraction form
    728,764.20/1,092,627.90 = 279,311.40/x
  3. Step 3: Cross multiply
    728,764.20x = 1,092,627.90 × 279,311.40
  4. Step 4: Simplify right side
    728,764.20x = 305,183,428,428.06
  5. Step 5: Solve for x
    x = 305,183,428,428.06/728,764.20
  6. Step 6: Final answer
    x = 418,768.41

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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.