Home / 170,621-398,729

Finding the Third Proportional to 170,621 and 398,729

Calculator

Solution

The third proportional to 170,621 and 398,729 is: 931,800.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,621 : 398,729 = 398,729 : x
  2. Step 2: Convert to fraction form
    170,621/398,729 = 398,729/x
  3. Step 3: Cross multiply
    170,621x = 398,729 × 398,729
  4. Step 4: Simplify right side
    170,621x = 158,984,815,441
  5. Step 5: Solve for x
    x = 158,984,815,441/170,621
  6. Step 6: Final answer
    x = 931,800.98

Related Problems

Find third proportional to 85,310.50 and 199,364.50
Half scale
Find third proportional to 341,242 and 797,458
Double scale
Find third proportional to 170,623 and 398,734
Similar ratio
Find third proportional to 255,931.50 and 598,093.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.