Home / 789,716.40-1,089,805.05-427,139.39

Finding the Fourth Proportional to 789,716.40, 1,089,805.05 and 427,139.39

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Solution

The fourth proportional to 789,716.40, 1,089,805.05 and 427,139.39 is: 589,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,716.40 : 1,089,805.05 = 427,139.39 : x
  2. Step 2: Convert to fraction form
    789,716.40/1,089,805.05 = 427,139.39/x
  3. Step 3: Cross multiply
    789,716.40x = 1,089,805.05 × 427,139.39
  4. Step 4: Simplify right side
    789,716.40x = 465,498,664,275.92
  5. Step 5: Solve for x
    x = 465,498,664,275.92/789,716.40
  6. Step 6: Final answer
    x = 589,450.42

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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.