Home / 789,799.94-1,089,917.13-445,638.44

Finding the Fourth Proportional to 789,799.94, 1,089,917.13 and 445,638.44

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Solution

The fourth proportional to 789,799.94, 1,089,917.13 and 445,638.44 is: 614,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,799.94 : 1,089,917.13 = 445,638.44 : x
  2. Step 2: Convert to fraction form
    789,799.94/1,089,917.13 = 445,638.44/x
  3. Step 3: Cross multiply
    789,799.94x = 1,089,917.13 × 445,638.44
  4. Step 4: Simplify right side
    789,799.94x = 485,708,964,047.56
  5. Step 5: Solve for x
    x = 485,708,964,047.56/789,799.94
  6. Step 6: Final answer
    x = 614,977.21

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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.