Home / 1,419,638.40-2,131,012.80-789,782.40

Finding the Fourth Proportional to 1,419,638.40, 2,131,012.80 and 789,782.40

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Solution

The fourth proportional to 1,419,638.40, 2,131,012.80 and 789,782.40 is: 1,185,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,638.40 : 2,131,012.80 = 789,782.40 : x
  2. Step 2: Convert to fraction form
    1,419,638.40/2,131,012.80 = 789,782.40/x
  3. Step 3: Cross multiply
    1,419,638.40x = 2,131,012.80 × 789,782.40
  4. Step 4: Simplify right side
    1,419,638.40x = 1,683,036,403,614.72
  5. Step 5: Solve for x
    x = 1,683,036,403,614.72/1,419,638.40
  6. Step 6: Final answer
    x = 1,185,538.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.