Home / 343,170-517,455

Finding the Third Proportional to 343,170 and 517,455

Calculator

Solution

The third proportional to 343,170 and 517,455 is: 780,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,170 : 517,455 = 517,455 : x
  2. Step 2: Convert to fraction form
    343,170/517,455 = 517,455/x
  3. Step 3: Cross multiply
    343,170x = 517,455 × 517,455
  4. Step 4: Simplify right side
    343,170x = 267,759,677,025
  5. Step 5: Solve for x
    x = 267,759,677,025/343,170
  6. Step 6: Final answer
    x = 780,253.74

Related Problems

Find third proportional to 171,585 and 258,727.50
Half scale
Find third proportional to 686,340 and 1,034,910
Double scale
Find third proportional to 343,172 and 517,458
Similar ratio
Find third proportional to 514,755 and 776,182.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.