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Finding the Fourth Proportional to 809,660.40, 1,214,490.60 and 248,694.90

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Solution

The fourth proportional to 809,660.40, 1,214,490.60 and 248,694.90 is: 373,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,660.40 : 1,214,490.60 = 248,694.90 : x
  2. Step 2: Convert to fraction form
    809,660.40/1,214,490.60 = 248,694.90/x
  3. Step 3: Cross multiply
    809,660.40x = 1,214,490.60 × 248,694.90
  4. Step 4: Simplify right side
    809,660.40x = 302,037,618,317.94
  5. Step 5: Solve for x
    x = 302,037,618,317.94/809,660.40
  6. Step 6: Final answer
    x = 373,042.35

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Similar ratio
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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.