Home / 789,218.56-1,089,177.20-445,085.28

Finding the Fourth Proportional to 789,218.56, 1,089,177.20 and 445,085.28

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Solution

The fourth proportional to 789,218.56, 1,089,177.20 and 445,085.28 is: 614,249.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,218.56 : 1,089,177.20 = 445,085.28 : x
  2. Step 2: Convert to fraction form
    789,218.56/1,089,177.20 = 445,085.28/x
  3. Step 3: Cross multiply
    789,218.56x = 1,089,177.20 × 445,085.28
  4. Step 4: Simplify right side
    789,218.56x = 484,776,739,031.62
  5. Step 5: Solve for x
    x = 484,776,739,031.62/789,218.56
  6. Step 6: Final answer
    x = 614,249.04

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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.