Home / 861,942.80-1,189,481.00-499,576.85

Finding the Fourth Proportional to 861,942.80, 1,189,481.00 and 499,576.85

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Solution

The fourth proportional to 861,942.80, 1,189,481.00 and 499,576.85 is: 689,416.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,942.80 : 1,189,481.00 = 499,576.85 : x
  2. Step 2: Convert to fraction form
    861,942.80/1,189,481.00 = 499,576.85/x
  3. Step 3: Cross multiply
    861,942.80x = 1,189,481.00 × 499,576.85
  4. Step 4: Simplify right side
    861,942.80x = 594,237,167,130.12
  5. Step 5: Solve for x
    x = 594,237,167,130.12/861,942.80
  6. Step 6: Final answer
    x = 689,416.01

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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.