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Finding the Fourth Proportional to 479,886.12, 661,842.09 and 359,314.38

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Solution

The fourth proportional to 479,886.12, 661,842.09 and 359,314.38 is: 495,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,886.12 : 661,842.09 = 359,314.38 : x
  2. Step 2: Convert to fraction form
    479,886.12/661,842.09 = 359,314.38/x
  3. Step 3: Cross multiply
    479,886.12x = 661,842.09 × 359,314.38
  4. Step 4: Simplify right side
    479,886.12x = 237,809,380,226.25
  5. Step 5: Solve for x
    x = 237,809,380,226.25/479,886.12
  6. Step 6: Final answer
    x = 495,553.78

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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.