Home / 855,091.80-1,281,791.70-405,021.60

Finding the Fourth Proportional to 855,091.80, 1,281,791.70 and 405,021.60

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Solution

The fourth proportional to 855,091.80, 1,281,791.70 and 405,021.60 is: 607,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,091.80 : 1,281,791.70 = 405,021.60 : x
  2. Step 2: Convert to fraction form
    855,091.80/1,281,791.70 = 405,021.60/x
  3. Step 3: Cross multiply
    855,091.80x = 1,281,791.70 × 405,021.60
  4. Step 4: Simplify right side
    855,091.80x = 519,153,325,200.72
  5. Step 5: Solve for x
    x = 519,153,325,200.72/855,091.80
  6. Step 6: Final answer
    x = 607,131.68

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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.