Home / 769,499.70-1,154,249.55-512,636.55

Finding the Fourth Proportional to 769,499.70, 1,154,249.55 and 512,636.55

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Solution

The fourth proportional to 769,499.70, 1,154,249.55 and 512,636.55 is: 768,954.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,499.70 : 1,154,249.55 = 512,636.55 : x
  2. Step 2: Convert to fraction form
    769,499.70/1,154,249.55 = 512,636.55/x
  3. Step 3: Cross multiply
    769,499.70x = 1,154,249.55 × 512,636.55
  4. Step 4: Simplify right side
    769,499.70x = 591,710,507,151.05
  5. Step 5: Solve for x
    x = 591,710,507,151.05/769,499.70
  6. Step 6: Final answer
    x = 768,954.83

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Double scale
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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.