Home / 643,170-945,485

Finding the Third Proportional to 643,170 and 945,485

Calculator

Solution

The third proportional to 643,170 and 945,485 is: 1,389,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,170 : 945,485 = 945,485 : x
  2. Step 2: Convert to fraction form
    643,170/945,485 = 945,485/x
  3. Step 3: Cross multiply
    643,170x = 945,485 × 945,485
  4. Step 4: Simplify right side
    643,170x = 893,941,885,225
  5. Step 5: Solve for x
    x = 893,941,885,225/643,170
  6. Step 6: Final answer
    x = 1,389,899.85

Related Problems

Find third proportional to 321,585 and 472,742.50
Half scale
Find third proportional to 1,286,340 and 1,890,970
Double scale
Find third proportional to 643,172 and 945,488
Similar ratio
Find third proportional to 964,755 and 1,418,227.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.