Home / 493,757.20-681,479.40-289,853.20

Finding the Fourth Proportional to 493,757.20, 681,479.40 and 289,853.20

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Solution

The fourth proportional to 493,757.20, 681,479.40 and 289,853.20 is: 400,052.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,757.20 : 681,479.40 = 289,853.20 : x
  2. Step 2: Convert to fraction form
    493,757.20/681,479.40 = 289,853.20/x
  3. Step 3: Cross multiply
    493,757.20x = 681,479.40 × 289,853.20
  4. Step 4: Simplify right side
    493,757.20x = 197,528,984,824.08
  5. Step 5: Solve for x
    x = 197,528,984,824.08/493,757.20
  6. Step 6: Final answer
    x = 400,052.87

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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.