Home / 398,416-631,168

Finding the Third Proportional to 398,416 and 631,168

Calculator

Solution

The third proportional to 398,416 and 631,168 is: 999,892.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,416 : 631,168 = 631,168 : x
  2. Step 2: Convert to fraction form
    398,416/631,168 = 631,168/x
  3. Step 3: Cross multiply
    398,416x = 631,168 × 631,168
  4. Step 4: Simplify right side
    398,416x = 398,373,044,224
  5. Step 5: Solve for x
    x = 398,373,044,224/398,416
  6. Step 6: Final answer
    x = 999,892.18

Related Problems

Find third proportional to 199,208 and 315,584
Half scale
Find third proportional to 796,832 and 1,262,336
Double scale
Find third proportional to 398,418 and 631,171
Similar ratio
Find third proportional to 597,624 and 946,752
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.