Home / 494,261.98-682,154.40-312,990.46

Finding the Fourth Proportional to 494,261.98, 682,154.40 and 312,990.46

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Solution

The fourth proportional to 494,261.98, 682,154.40 and 312,990.46 is: 431,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,261.98 : 682,154.40 = 312,990.46 : x
  2. Step 2: Convert to fraction form
    494,261.98/682,154.40 = 312,990.46/x
  3. Step 3: Cross multiply
    494,261.98x = 682,154.40 × 312,990.46
  4. Step 4: Simplify right side
    494,261.98x = 213,507,819,447.02
  5. Step 5: Solve for x
    x = 213,507,819,447.02/494,261.98
  6. Step 6: Final answer
    x = 431,972.98

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1.5x scale

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.