Home / 1,219,420.38-1,821,713.15-789,453.35

Finding the Fourth Proportional to 1,219,420.38, 1,821,713.15 and 789,453.35

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Solution

The fourth proportional to 1,219,420.38, 1,821,713.15 and 789,453.35 is: 1,179,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,420.38 : 1,821,713.15 = 789,453.35 : x
  2. Step 2: Convert to fraction form
    1,219,420.38/1,821,713.15 = 789,453.35/x
  3. Step 3: Cross multiply
    1,219,420.38x = 1,821,713.15 × 789,453.35
  4. Step 4: Simplify right side
    1,219,420.38x = 1,438,157,535,950.72
  5. Step 5: Solve for x
    x = 1,438,157,535,950.72/1,219,420.38
  6. Step 6: Final answer
    x = 1,179,377.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.