Home / 862,209.85-1,189,849.92-499,843.77

Finding the Fourth Proportional to 862,209.85, 1,189,849.92 and 499,843.77

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Solution

The fourth proportional to 862,209.85, 1,189,849.92 and 499,843.77 is: 689,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,209.85 : 1,189,849.92 = 499,843.77 : x
  2. Step 2: Convert to fraction form
    862,209.85/1,189,849.92 = 499,843.77/x
  3. Step 3: Cross multiply
    862,209.85x = 1,189,849.92 × 499,843.77
  4. Step 4: Simplify right side
    862,209.85x = 594,739,069,747.00
  5. Step 5: Solve for x
    x = 594,739,069,747.00/862,209.85
  6. Step 6: Final answer
    x = 689,784.59

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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.