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Finding the Fourth Proportional to 500,662.02, 690,910.63 and 271,223.68

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Solution

The fourth proportional to 500,662.02, 690,910.63 and 271,223.68 is: 374,287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,662.02 : 690,910.63 = 271,223.68 : x
  2. Step 2: Convert to fraction form
    500,662.02/690,910.63 = 271,223.68/x
  3. Step 3: Cross multiply
    500,662.02x = 690,910.63 × 271,223.68
  4. Step 4: Simplify right side
    500,662.02x = 187,391,323,619.72
  5. Step 5: Solve for x
    x = 187,391,323,619.72/500,662.02
  6. Step 6: Final answer
    x = 374,287.08

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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.