Home / 789,645.87-1,089,711.27-427,069.71

Finding the Fourth Proportional to 789,645.87, 1,089,711.27 and 427,069.71

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Solution

The fourth proportional to 789,645.87, 1,089,711.27 and 427,069.71 is: 589,356.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,645.87 : 1,089,711.27 = 427,069.71 : x
  2. Step 2: Convert to fraction form
    789,645.87/1,089,711.27 = 427,069.71/x
  3. Step 3: Cross multiply
    789,645.87x = 1,089,711.27 × 427,069.71
  4. Step 4: Simplify right side
    789,645.87x = 465,382,676,062.63
  5. Step 5: Solve for x
    x = 465,382,676,062.63/789,645.87
  6. Step 6: Final answer
    x = 589,356.18

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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.