Home / 829,560.78-1,145,147.72-557,786.21

Finding the Fourth Proportional to 829,560.78, 1,145,147.72 and 557,786.21

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Solution

The fourth proportional to 829,560.78, 1,145,147.72 and 557,786.21 is: 769,982.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,560.78 : 1,145,147.72 = 557,786.21 : x
  2. Step 2: Convert to fraction form
    829,560.78/1,145,147.72 = 557,786.21/x
  3. Step 3: Cross multiply
    829,560.78x = 1,145,147.72 × 557,786.21
  4. Step 4: Simplify right side
    829,560.78x = 638,747,598,114.27
  5. Step 5: Solve for x
    x = 638,747,598,114.27/829,560.78
  6. Step 6: Final answer
    x = 769,982.88

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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.