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Finding the Fourth Proportional to 490,878.20, 735,798.90 and 280,062.20

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Solution

The fourth proportional to 490,878.20, 735,798.90 and 280,062.20 is: 419,797.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,878.20 : 735,798.90 = 280,062.20 : x
  2. Step 2: Convert to fraction form
    490,878.20/735,798.90 = 280,062.20/x
  3. Step 3: Cross multiply
    490,878.20x = 735,798.90 × 280,062.20
  4. Step 4: Simplify right side
    490,878.20x = 206,069,458,691.58
  5. Step 5: Solve for x
    x = 206,069,458,691.58/490,878.20
  6. Step 6: Final answer
    x = 419,797.54

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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.