Home / 775,515.12-1,070,195.51-431,343.64

Finding the Fourth Proportional to 775,515.12, 1,070,195.51 and 431,343.64

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Solution

The fourth proportional to 775,515.12, 1,070,195.51 and 431,343.64 is: 595,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,515.12 : 1,070,195.51 = 431,343.64 : x
  2. Step 2: Convert to fraction form
    775,515.12/1,070,195.51 = 431,343.64/x
  3. Step 3: Cross multiply
    775,515.12x = 1,070,195.51 × 431,343.64
  4. Step 4: Simplify right side
    775,515.12x = 461,622,025,716.70
  5. Step 5: Solve for x
    x = 461,622,025,716.70/775,515.12
  6. Step 6: Final answer
    x = 595,245.68

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.