Home / 655,982.20-983,128.46-318,369.48

Finding the Fourth Proportional to 655,982.20, 983,128.46 and 318,369.48

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Solution

The fourth proportional to 655,982.20, 983,128.46 and 318,369.48 is: 477,144.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,982.20 : 983,128.46 = 318,369.48 : x
  2. Step 2: Convert to fraction form
    655,982.20/983,128.46 = 318,369.48/x
  3. Step 3: Cross multiply
    655,982.20x = 983,128.46 × 318,369.48
  4. Step 4: Simplify right side
    655,982.20x = 312,998,096,583.40
  5. Step 5: Solve for x
    x = 312,998,096,583.40/655,982.20
  6. Step 6: Final answer
    x = 477,144.19

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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.