Home / 492,665.98-679,899.21-311,311.73

Finding the Fourth Proportional to 492,665.98, 679,899.21 and 311,311.73

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Solution

The fourth proportional to 492,665.98, 679,899.21 and 311,311.73 is: 429,622.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,665.98 : 679,899.21 = 311,311.73 : x
  2. Step 2: Convert to fraction form
    492,665.98/679,899.21 = 311,311.73/x
  3. Step 3: Cross multiply
    492,665.98x = 679,899.21 × 311,311.73
  4. Step 4: Simplify right side
    492,665.98x = 211,660,599,290.73
  5. Step 5: Solve for x
    x = 211,660,599,290.73/492,665.98
  6. Step 6: Final answer
    x = 429,622.92

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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.