Home / 619,790.40-929,815.20-199,108.80

Finding the Fourth Proportional to 619,790.40, 929,815.20 and 199,108.80

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Solution

The fourth proportional to 619,790.40, 929,815.20 and 199,108.80 is: 298,704.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,790.40 : 929,815.20 = 199,108.80 : x
  2. Step 2: Convert to fraction form
    619,790.40/929,815.20 = 199,108.80/x
  3. Step 3: Cross multiply
    619,790.40x = 929,815.20 × 199,108.80
  4. Step 4: Simplify right side
    619,790.40x = 185,134,388,693.76
  5. Step 5: Solve for x
    x = 185,134,388,693.76/619,790.40
  6. Step 6: Final answer
    x = 298,704.83

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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.