Home / 418,316-646,369

Finding the Third Proportional to 418,316 and 646,369

Calculator

Solution

The third proportional to 418,316 and 646,369 is: 998,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,316 : 646,369 = 646,369 : x
  2. Step 2: Convert to fraction form
    418,316/646,369 = 646,369/x
  3. Step 3: Cross multiply
    418,316x = 646,369 × 646,369
  4. Step 4: Simplify right side
    418,316x = 417,792,884,161
  5. Step 5: Solve for x
    x = 417,792,884,161/418,316
  6. Step 6: Final answer
    x = 998,749.47

Related Problems

Find third proportional to 209,158 and 323,184.50
Half scale
Find third proportional to 836,632 and 1,292,738
Double scale
Find third proportional to 418,318 and 646,372
Similar ratio
Find third proportional to 627,474 and 969,553.50
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.