Home / 1,434,082.80-1,979,003.12-789,478.32

Finding the Fourth Proportional to 1,434,082.80, 1,979,003.12 and 789,478.32

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Solution

The fourth proportional to 1,434,082.80, 1,979,003.12 and 789,478.32 is: 1,089,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,082.80 : 1,979,003.12 = 789,478.32 : x
  2. Step 2: Convert to fraction form
    1,434,082.80/1,979,003.12 = 789,478.32/x
  3. Step 3: Cross multiply
    1,434,082.80x = 1,979,003.12 × 789,478.32
  4. Step 4: Simplify right side
    1,434,082.80x = 1,562,380,058,452.36
  5. Step 5: Solve for x
    x = 1,562,380,058,452.36/1,434,082.80
  6. Step 6: Final answer
    x = 1,089,462.94

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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.