Home / 1,369,777.56-1,890,127.36-789,190.60

Finding the Fourth Proportional to 1,369,777.56, 1,890,127.36 and 789,190.60

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Solution

The fourth proportional to 1,369,777.56, 1,890,127.36 and 789,190.60 is: 1,088,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,777.56 : 1,890,127.36 = 789,190.60 : x
  2. Step 2: Convert to fraction form
    1,369,777.56/1,890,127.36 = 789,190.60/x
  3. Step 3: Cross multiply
    1,369,777.56x = 1,890,127.36 × 789,190.60
  4. Step 4: Simplify right side
    1,369,777.56x = 1,491,670,745,314.82
  5. Step 5: Solve for x
    x = 1,491,670,745,314.82/1,369,777.56
  6. Step 6: Final answer
    x = 1,088,987.58

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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.