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Finding the Fourth Proportional to 655,736.20, 983,604.30 and 403,793.80

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Solution

The fourth proportional to 655,736.20, 983,604.30 and 403,793.80 is: 605,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,736.20 : 983,604.30 = 403,793.80 : x
  2. Step 2: Convert to fraction form
    655,736.20/983,604.30 = 403,793.80/x
  3. Step 3: Cross multiply
    655,736.20x = 983,604.30 × 403,793.80
  4. Step 4: Simplify right side
    655,736.20x = 397,173,317,993.34
  5. Step 5: Solve for x
    x = 397,173,317,993.34/655,736.20
  6. Step 6: Final answer
    x = 605,690.70

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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.