Home / 1,079,356.58-1,489,443.15-620,361.78

Finding the Fourth Proportional to 1,079,356.58, 1,489,443.15 and 620,361.78

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Solution

The fourth proportional to 1,079,356.58, 1,489,443.15 and 620,361.78 is: 856,059.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,356.58 : 1,489,443.15 = 620,361.78 : x
  2. Step 2: Convert to fraction form
    1,079,356.58/1,489,443.15 = 620,361.78/x
  3. Step 3: Cross multiply
    1,079,356.58x = 1,489,443.15 × 620,361.78
  4. Step 4: Simplify right side
    1,079,356.58x = 923,993,603,742.81
  5. Step 5: Solve for x
    x = 923,993,603,742.81/1,079,356.58
  6. Step 6: Final answer
    x = 856,059.64

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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.