Home / 455,047.48-682,571.23-426,999.21

Finding the Fourth Proportional to 455,047.48, 682,571.23 and 426,999.21

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Solution

The fourth proportional to 455,047.48, 682,571.23 and 426,999.21 is: 640,498.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,047.48 : 682,571.23 = 426,999.21 : x
  2. Step 2: Convert to fraction form
    455,047.48/682,571.23 = 426,999.21/x
  3. Step 3: Cross multiply
    455,047.48x = 682,571.23 × 426,999.21
  4. Step 4: Simplify right side
    455,047.48x = 291,457,372,351.59
  5. Step 5: Solve for x
    x = 291,457,372,351.59/455,047.48
  6. Step 6: Final answer
    x = 640,498.81

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Similar ratio
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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.