Home / 789,642.69-1,089,706.91-427,066.55

Finding the Fourth Proportional to 789,642.69, 1,089,706.91 and 427,066.55

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Solution

The fourth proportional to 789,642.69, 1,089,706.91 and 427,066.55 is: 589,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,642.69 : 1,089,706.91 = 427,066.55 : x
  2. Step 2: Convert to fraction form
    789,642.69/1,089,706.91 = 427,066.55/x
  3. Step 3: Cross multiply
    789,642.69x = 1,089,706.91 × 427,066.55
  4. Step 4: Simplify right side
    789,642.69x = 465,377,368,908.26
  5. Step 5: Solve for x
    x = 465,377,368,908.26/789,642.69
  6. Step 6: Final answer
    x = 589,351.84

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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.