Home / 789,651.90-1,089,719.55-427,075.74

Finding the Fourth Proportional to 789,651.90, 1,089,719.55 and 427,075.74

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Solution

The fourth proportional to 789,651.90, 1,089,719.55 and 427,075.74 is: 589,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,651.90 : 1,089,719.55 = 427,075.74 : x
  2. Step 2: Convert to fraction form
    789,651.90/1,089,719.55 = 427,075.74/x
  3. Step 3: Cross multiply
    789,651.90x = 1,089,719.55 × 427,075.74
  4. Step 4: Simplify right side
    789,651.90x = 465,392,783,208.72
  5. Step 5: Solve for x
    x = 465,392,783,208.72/789,651.90
  6. Step 6: Final answer
    x = 589,364.48

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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.