Home / 820,640.14-1,132,672.35-481,217.74

Finding the Fourth Proportional to 820,640.14, 1,132,672.35 and 481,217.74

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Solution

The fourth proportional to 820,640.14, 1,132,672.35 and 481,217.74 is: 664,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,640.14 : 1,132,672.35 = 481,217.74 : x
  2. Step 2: Convert to fraction form
    820,640.14/1,132,672.35 = 481,217.74/x
  3. Step 3: Cross multiply
    820,640.14x = 1,132,672.35 × 481,217.74
  4. Step 4: Simplify right side
    820,640.14x = 545,062,028,427.49
  5. Step 5: Solve for x
    x = 545,062,028,427.49/820,640.14
  6. Step 6: Final answer
    x = 664,191.28

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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.