Home / 494,250.98-682,139.22-312,979.46

Finding the Fourth Proportional to 494,250.98, 682,139.22 and 312,979.46

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Solution

The fourth proportional to 494,250.98, 682,139.22 and 312,979.46 is: 431,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,250.98 : 682,139.22 = 312,979.46 : x
  2. Step 2: Convert to fraction form
    494,250.98/682,139.22 = 312,979.46/x
  3. Step 3: Cross multiply
    494,250.98x = 682,139.22 × 312,979.46
  4. Step 4: Simplify right side
    494,250.98x = 213,495,564,720.42
  5. Step 5: Solve for x
    x = 213,495,564,720.42/494,250.98
  6. Step 6: Final answer
    x = 431,957.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.