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Finding the Fourth Proportional to 663,903.40, 994,760.70 and 382,930.60

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Solution

The fourth proportional to 663,903.40, 994,760.70 and 382,930.60 is: 573,764.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,903.40 : 994,760.70 = 382,930.60 : x
  2. Step 2: Convert to fraction form
    663,903.40/994,760.70 = 382,930.60/x
  3. Step 3: Cross multiply
    663,903.40x = 994,760.70 × 382,930.60
  4. Step 4: Simplify right side
    663,903.40x = 380,924,311,707.42
  5. Step 5: Solve for x
    x = 380,924,311,707.42/663,903.40
  6. Step 6: Final answer
    x = 573,764.66

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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.