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Finding the Fourth Proportional to 455,968.86, 628,910.67 and 320,033.13

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Solution

The fourth proportional to 455,968.86, 628,910.67 and 320,033.13 is: 441,416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,968.86 : 628,910.67 = 320,033.13 : x
  2. Step 2: Convert to fraction form
    455,968.86/628,910.67 = 320,033.13/x
  3. Step 3: Cross multiply
    455,968.86x = 628,910.67 × 320,033.13
  4. Step 4: Simplify right side
    455,968.86x = 201,272,250,210.50
  5. Step 5: Solve for x
    x = 201,272,250,210.50/455,968.86
  6. Step 6: Final answer
    x = 441,416.66

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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.