Home / 709,819.20-1,065,506.40-394,891.20

Finding the Fourth Proportional to 709,819.20, 1,065,506.40 and 394,891.20

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Solution

The fourth proportional to 709,819.20, 1,065,506.40 and 394,891.20 is: 592,769.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,819.20 : 1,065,506.40 = 394,891.20 : x
  2. Step 2: Convert to fraction form
    709,819.20/1,065,506.40 = 394,891.20/x
  3. Step 3: Cross multiply
    709,819.20x = 1,065,506.40 × 394,891.20
  4. Step 4: Simplify right side
    709,819.20x = 420,759,100,903.68
  5. Step 5: Solve for x
    x = 420,759,100,903.68/709,819.20
  6. Step 6: Final answer
    x = 592,769.40

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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.