Home / 744.19-857.81

Finding the Third Proportional to 744.19 and 857.81

Calculator

Solution

The third proportional to 744.19 and 857.81 is: 988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.19 : 857.81 = 857.81 : x
  2. Step 2: Convert to fraction form
    744.19/857.81 = 857.81/x
  3. Step 3: Cross multiply
    744.19x = 857.81 × 857.81
  4. Step 4: Simplify right side
    744.19x = 735,842.29
  5. Step 5: Solve for x
    x = 735,842.29/744.19
  6. Step 6: Final answer
    x = 988.79

Related Problems

Find third proportional to 372.09 and 428.91
Half scale
Find third proportional to 1,488.38 and 1,715.63
Double scale
Find third proportional to 746 and 860
Similar ratio
Find third proportional to 1,116.28 and 1,286.72
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.