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Finding the Fourth Proportional to 662,690.90, 994,070.92 and 189,447.86

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Solution

The fourth proportional to 662,690.90, 994,070.92 and 189,447.86 is: 284,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,690.90 : 994,070.92 = 189,447.86 : x
  2. Step 2: Convert to fraction form
    662,690.90/994,070.92 = 189,447.86/x
  3. Step 3: Cross multiply
    662,690.90x = 994,070.92 × 189,447.86
  4. Step 4: Simplify right side
    662,690.90x = 188,324,608,482.23
  5. Step 5: Solve for x
    x = 188,324,608,482.23/662,690.90
  6. Step 6: Final answer
    x = 284,181.67

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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.