Home / 411,987.20-619,017.60-262,299.20

Finding the Fourth Proportional to 411,987.20, 619,017.60 and 262,299.20

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Solution

The fourth proportional to 411,987.20, 619,017.60 and 262,299.20 is: 394,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,987.20 : 619,017.60 = 262,299.20 : x
  2. Step 2: Convert to fraction form
    411,987.20/619,017.60 = 262,299.20/x
  3. Step 3: Cross multiply
    411,987.20x = 619,017.60 × 262,299.20
  4. Step 4: Simplify right side
    411,987.20x = 162,367,821,265.92
  5. Step 5: Solve for x
    x = 162,367,821,265.92/411,987.20
  6. Step 6: Final answer
    x = 394,108.90

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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.