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Finding the Fourth Proportional to 655,806.33, 983,451.56 and 318,748.23

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Solution

The fourth proportional to 655,806.33, 983,451.56 and 318,748.23 is: 477,996.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,806.33 : 983,451.56 = 318,748.23 : x
  2. Step 2: Convert to fraction form
    655,806.33/983,451.56 = 318,748.23/x
  3. Step 3: Cross multiply
    655,806.33x = 983,451.56 × 318,748.23
  4. Step 4: Simplify right side
    655,806.33x = 313,473,442,447.00
  5. Step 5: Solve for x
    x = 313,473,442,447.00/655,806.33
  6. Step 6: Final answer
    x = 477,996.98

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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.