Home / 1,279,732.52-1,766,228.64-789,987.98

Finding the Fourth Proportional to 1,279,732.52, 1,766,228.64 and 789,987.98

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Solution

The fourth proportional to 1,279,732.52, 1,766,228.64 and 789,987.98 is: 1,090,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,732.52 : 1,766,228.64 = 789,987.98 : x
  2. Step 2: Convert to fraction form
    1,279,732.52/1,766,228.64 = 789,987.98/x
  3. Step 3: Cross multiply
    1,279,732.52x = 1,766,228.64 × 789,987.98
  4. Step 4: Simplify right side
    1,279,732.52x = 1,395,299,395,531.75
  5. Step 5: Solve for x
    x = 1,395,299,395,531.75/1,279,732.52
  6. Step 6: Final answer
    x = 1,090,305.49

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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.