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Finding the Fourth Proportional to 485,694.12, 670,260.83 and 270,847.80

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Solution

The fourth proportional to 485,694.12, 670,260.83 and 270,847.80 is: 373,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,694.12 : 670,260.83 = 270,847.80 : x
  2. Step 2: Convert to fraction form
    485,694.12/670,260.83 = 270,847.80/x
  3. Step 3: Cross multiply
    485,694.12x = 670,260.83 × 270,847.80
  4. Step 4: Simplify right side
    485,694.12x = 181,538,669,877.44
  5. Step 5: Solve for x
    x = 181,538,669,877.44/485,694.12
  6. Step 6: Final answer
    x = 373,771.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.