Home / 800,340,105.10-1,200,510,157.65-664,291,209.10

Finding the Fourth Proportional to 800,340,105.10, 1,200,510,157.65 and 664,291,209.10

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Solution

The fourth proportional to 800,340,105.10, 1,200,510,157.65 and 664,291,209.10 is: 996,436,813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,340,105.10 : 1,200,510,157.65 = 664,291,209.10 : x
  2. Step 2: Convert to fraction form
    800,340,105.10/1,200,510,157.65 = 664,291,209.10/x
  3. Step 3: Cross multiply
    800,340,105.10x = 1,200,510,157.65 × 664,291,209.10
  4. Step 4: Simplify right side
    800,340,105.10x = 797,488,344,162,150,144
  5. Step 5: Solve for x
    x = 797,488,344,162,150,144/800,340,105.10
  6. Step 6: Final answer
    x = 996,436,813.65

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Half scale
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Double scale
Find fourth proportional to 800,340,106.10, 1,200,510,159.15 and 664,291,210.10
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.