Home / 789,471.05-1,089,469.28-426,894.03

Finding the Fourth Proportional to 789,471.05, 1,089,469.28 and 426,894.03

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Solution

The fourth proportional to 789,471.05, 1,089,469.28 and 426,894.03 is: 589,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,471.05 : 1,089,469.28 = 426,894.03 : x
  2. Step 2: Convert to fraction form
    789,471.05/1,089,469.28 = 426,894.03/x
  3. Step 3: Cross multiply
    789,471.05x = 1,089,469.28 × 426,894.03
  4. Step 4: Simplify right side
    789,471.05x = 465,087,929,365.93
  5. Step 5: Solve for x
    x = 465,087,929,365.93/789,471.05
  6. Step 6: Final answer
    x = 589,113.35

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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.