Home / 775,685.36-1,070,431.56-431,519.60

Finding the Fourth Proportional to 775,685.36, 1,070,431.56 and 431,519.60

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Solution

The fourth proportional to 775,685.36, 1,070,431.56 and 431,519.60 is: 595,489.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,685.36 : 1,070,431.56 = 431,519.60 : x
  2. Step 2: Convert to fraction form
    775,685.36/1,070,431.56 = 431,519.60/x
  3. Step 3: Cross multiply
    775,685.36x = 1,070,431.56 × 431,519.60
  4. Step 4: Simplify right side
    775,685.36x = 461,912,198,598.58
  5. Step 5: Solve for x
    x = 461,912,198,598.58/775,685.36
  6. Step 6: Final answer
    x = 595,489.13

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Double scale
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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.