Home / 812,101.80-1,215,528.30-633,642.60

Finding the Fourth Proportional to 812,101.80, 1,215,528.30 and 633,642.60

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Solution

The fourth proportional to 812,101.80, 1,215,528.30 and 633,642.60 is: 948,416.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,101.80 : 1,215,528.30 = 633,642.60 : x
  2. Step 2: Convert to fraction form
    812,101.80/1,215,528.30 = 633,642.60/x
  3. Step 3: Cross multiply
    812,101.80x = 1,215,528.30 × 633,642.60
  4. Step 4: Simplify right side
    812,101.80x = 770,210,512,385.58
  5. Step 5: Solve for x
    x = 770,210,512,385.58/812,101.80
  6. Step 6: Final answer
    x = 948,416.21

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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.