Home / 273,822-420,705

Finding the Third Proportional to 273,822 and 420,705

Calculator

Solution

The third proportional to 273,822 and 420,705 is: 646,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,822 : 420,705 = 420,705 : x
  2. Step 2: Convert to fraction form
    273,822/420,705 = 420,705/x
  3. Step 3: Cross multiply
    273,822x = 420,705 × 420,705
  4. Step 4: Simplify right side
    273,822x = 176,992,697,025
  5. Step 5: Solve for x
    x = 176,992,697,025/273,822
  6. Step 6: Final answer
    x = 646,378.66

Related Problems

Find third proportional to 136,911 and 210,352.50
Half scale
Find third proportional to 547,644 and 841,410
Double scale
Find third proportional to 273,824 and 420,708
Similar ratio
Find third proportional to 410,733 and 631,057.50
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.