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Finding the Fourth Proportional to 863,133.40, 1,294,181.70 and 443,229.40

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Solution

The fourth proportional to 863,133.40, 1,294,181.70 and 443,229.40 is: 664,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,133.40 : 1,294,181.70 = 443,229.40 : x
  2. Step 2: Convert to fraction form
    863,133.40/1,294,181.70 = 443,229.40/x
  3. Step 3: Cross multiply
    863,133.40x = 1,294,181.70 × 443,229.40
  4. Step 4: Simplify right side
    863,133.40x = 573,619,378,381.98
  5. Step 5: Solve for x
    x = 573,619,378,381.98/863,133.40
  6. Step 6: Final answer
    x = 664,577.90

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1.5x scale

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.