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Finding the Fourth Proportional to 667,016.95, 920,482.34 and 361,093.25

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Solution

The fourth proportional to 667,016.95, 920,482.34 and 361,093.25 is: 498,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,016.95 : 920,482.34 = 361,093.25 : x
  2. Step 2: Convert to fraction form
    667,016.95/920,482.34 = 361,093.25/x
  3. Step 3: Cross multiply
    667,016.95x = 920,482.34 × 361,093.25
  4. Step 4: Simplify right side
    667,016.95x = 332,379,956,762.14
  5. Step 5: Solve for x
    x = 332,379,956,762.14/667,016.95
  6. Step 6: Final answer
    x = 498,308.11

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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.