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Finding the Fourth Proportional to 455,003.20, 682,504.80 and 448,004.80

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Solution

The fourth proportional to 455,003.20, 682,504.80 and 448,004.80 is: 672,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,003.20 : 682,504.80 = 448,004.80 : x
  2. Step 2: Convert to fraction form
    455,003.20/682,504.80 = 448,004.80/x
  3. Step 3: Cross multiply
    455,003.20x = 682,504.80 × 448,004.80
  4. Step 4: Simplify right side
    455,003.20x = 305,765,426,423.04
  5. Step 5: Solve for x
    x = 305,765,426,423.04/455,003.20
  6. Step 6: Final answer
    x = 672,007.20

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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.