Home / 493,747.20-681,465.60-289,843.20

Finding the Fourth Proportional to 493,747.20, 681,465.60 and 289,843.20

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Solution

The fourth proportional to 493,747.20, 681,465.60 and 289,843.20 is: 400,039.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,747.20 : 681,465.60 = 289,843.20 : x
  2. Step 2: Convert to fraction form
    493,747.20/681,465.60 = 289,843.20/x
  3. Step 3: Cross multiply
    493,747.20x = 681,465.60 × 289,843.20
  4. Step 4: Simplify right side
    493,747.20x = 197,518,170,193.92
  5. Step 5: Solve for x
    x = 197,518,170,193.92/493,747.20
  6. Step 6: Final answer
    x = 400,039.07

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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.