Home / 789,642.19-1,089,706.22-427,066.05

Finding the Fourth Proportional to 789,642.19, 1,089,706.22 and 427,066.05

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Solution

The fourth proportional to 789,642.19, 1,089,706.22 and 427,066.05 is: 589,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,642.19 : 1,089,706.22 = 427,066.05 : x
  2. Step 2: Convert to fraction form
    789,642.19/1,089,706.22 = 427,066.05/x
  3. Step 3: Cross multiply
    789,642.19x = 1,089,706.22 × 427,066.05
  4. Step 4: Simplify right side
    789,642.19x = 465,376,529,659.92
  5. Step 5: Solve for x
    x = 465,376,529,659.92/789,642.19
  6. Step 6: Final answer
    x = 589,351.15

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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.