Home / 445,170-689,745

Finding the Third Proportional to 445,170 and 689,745

Calculator

Solution

The third proportional to 445,170 and 689,745 is: 1,068,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,170 : 689,745 = 689,745 : x
  2. Step 2: Convert to fraction form
    445,170/689,745 = 689,745/x
  3. Step 3: Cross multiply
    445,170x = 689,745 × 689,745
  4. Step 4: Simplify right side
    445,170x = 475,748,165,025
  5. Step 5: Solve for x
    x = 475,748,165,025/445,170
  6. Step 6: Final answer
    x = 1,068,688.74

Related Problems

Find third proportional to 222,585 and 344,872.50
Half scale
Find third proportional to 890,340 and 1,379,490
Double scale
Find third proportional to 445,172 and 689,748
Similar ratio
Find third proportional to 667,755 and 1,034,617.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.