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Finding the Fourth Proportional to 812,086.80, 1,215,505.80 and 633,627.60

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Solution

The fourth proportional to 812,086.80, 1,215,505.80 and 633,627.60 is: 948,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,086.80 : 1,215,505.80 = 633,627.60 : x
  2. Step 2: Convert to fraction form
    812,086.80/1,215,505.80 = 633,627.60/x
  3. Step 3: Cross multiply
    812,086.80x = 1,215,505.80 × 633,627.60
  4. Step 4: Simplify right side
    812,086.80x = 770,178,022,840.08
  5. Step 5: Solve for x
    x = 770,178,022,840.08/812,086.80
  6. Step 6: Final answer
    x = 948,393.72

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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.