Home / 398,810-612,995

Finding the Third Proportional to 398,810 and 612,995

Calculator

Solution

The third proportional to 398,810 and 612,995 is: 942,210.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,810 : 612,995 = 612,995 : x
  2. Step 2: Convert to fraction form
    398,810/612,995 = 612,995/x
  3. Step 3: Cross multiply
    398,810x = 612,995 × 612,995
  4. Step 4: Simplify right side
    398,810x = 375,762,870,025
  5. Step 5: Solve for x
    x = 375,762,870,025/398,810
  6. Step 6: Final answer
    x = 942,210.25

Related Problems

Find third proportional to 199,405 and 306,497.50
Half scale
Find third proportional to 797,620 and 1,225,990
Double scale
Find third proportional to 398,812 and 612,998
Similar ratio
Find third proportional to 598,215 and 919,492.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.