Home / 1,379,990.61-1,904,408.55-768,150.09

Finding the Fourth Proportional to 1,379,990.61, 1,904,408.55 and 768,150.09

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Solution

The fourth proportional to 1,379,990.61, 1,904,408.55 and 768,150.09 is: 1,060,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,990.61 : 1,904,408.55 = 768,150.09 : x
  2. Step 2: Convert to fraction form
    1,379,990.61/1,904,408.55 = 768,150.09/x
  3. Step 3: Cross multiply
    1,379,990.61x = 1,904,408.55 × 768,150.09
  4. Step 4: Simplify right side
    1,379,990.61x = 1,462,871,599,079.27
  5. Step 5: Solve for x
    x = 1,462,871,599,079.27/1,379,990.61
  6. Step 6: Final answer
    x = 1,060,059.10

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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.