Home / 717.19-838.69

Finding the Third Proportional to 717.19 and 838.69

Calculator

Solution

The third proportional to 717.19 and 838.69 is: 980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.19 : 838.69 = 838.69 : x
  2. Step 2: Convert to fraction form
    717.19/838.69 = 838.69/x
  3. Step 3: Cross multiply
    717.19x = 838.69 × 838.69
  4. Step 4: Simplify right side
    717.19x = 703,396.72
  5. Step 5: Solve for x
    x = 703,396.72/717.19
  6. Step 6: Final answer
    x = 980.77

Related Problems

Find third proportional to 358.59 and 419.34
Half scale
Find third proportional to 1,434.38 and 1,677.38
Double scale
Find third proportional to 719 and 841
Similar ratio
Find third proportional to 1,075.78 and 1,258.03
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.