Home / 1,138,327.56-1,707,558.06-428,361.72

Finding the Fourth Proportional to 1,138,327.56, 1,707,558.06 and 428,361.72

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Solution

The fourth proportional to 1,138,327.56, 1,707,558.06 and 428,361.72 is: 642,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,327.56 : 1,707,558.06 = 428,361.72 : x
  2. Step 2: Convert to fraction form
    1,138,327.56/1,707,558.06 = 428,361.72/x
  3. Step 3: Cross multiply
    1,138,327.56x = 1,707,558.06 × 428,361.72
  4. Step 4: Simplify right side
    1,138,327.56x = 731,452,507,581.46
  5. Step 5: Solve for x
    x = 731,452,507,581.46/1,138,327.56
  6. Step 6: Final answer
    x = 642,567.69

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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.