Home / 1,389,383.37-2,083,783.46-391,878.09

Finding the Fourth Proportional to 1,389,383.37, 2,083,783.46 and 391,878.09

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Solution

The fourth proportional to 1,389,383.37, 2,083,783.46 and 391,878.09 is: 587,734.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,383.37 : 2,083,783.46 = 391,878.09 : x
  2. Step 2: Convert to fraction form
    1,389,383.37/2,083,783.46 = 391,878.09/x
  3. Step 3: Cross multiply
    1,389,383.37x = 2,083,783.46 × 391,878.09
  4. Step 4: Simplify right side
    1,389,383.37x = 816,589,080,319.00
  5. Step 5: Solve for x
    x = 816,589,080,319.00/1,389,383.37
  6. Step 6: Final answer
    x = 587,734.89

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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.