Home / 751,974.47-1,128,028.19-212,235.56

Finding the Fourth Proportional to 751,974.47, 1,128,028.19 and 212,235.56

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Solution

The fourth proportional to 751,974.47, 1,128,028.19 and 212,235.56 is: 318,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,974.47 : 1,128,028.19 = 212,235.56 : x
  2. Step 2: Convert to fraction form
    751,974.47/1,128,028.19 = 212,235.56/x
  3. Step 3: Cross multiply
    751,974.47x = 1,128,028.19 × 212,235.56
  4. Step 4: Simplify right side
    751,974.47x = 239,407,687,899.12
  5. Step 5: Solve for x
    x = 239,407,687,899.12/751,974.47
  6. Step 6: Final answer
    x = 318,372.10

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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.