Home / 990.60-1,486.44-625.56

Finding the Fourth Proportional to 990.60, 1,486.44 and 625.56

Calculator

Solution

The fourth proportional to 990.60, 1,486.44 and 625.56 is: 938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    990.60 : 1,486.44 = 625.56 : x
  2. Step 2: Convert to fraction form
    990.60/1,486.44 = 625.56/x
  3. Step 3: Cross multiply
    990.60x = 1,486.44 × 625.56
  4. Step 4: Simplify right side
    990.60x = 929,857.41
  5. Step 5: Solve for x
    x = 929,857.41/990.60
  6. Step 6: Final answer
    x = 938.68

Related Problems

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.