Home / 638,819.80-958,229.70-470,858.20

Finding the Fourth Proportional to 638,819.80, 958,229.70 and 470,858.20

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Solution

The fourth proportional to 638,819.80, 958,229.70 and 470,858.20 is: 706,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,819.80 : 958,229.70 = 470,858.20 : x
  2. Step 2: Convert to fraction form
    638,819.80/958,229.70 = 470,858.20/x
  3. Step 3: Cross multiply
    638,819.80x = 958,229.70 × 470,858.20
  4. Step 4: Simplify right side
    638,819.80x = 451,190,311,728.54
  5. Step 5: Solve for x
    x = 451,190,311,728.54/638,819.80
  6. Step 6: Final answer
    x = 706,287.30

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Similar ratio
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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.