Home / 311,128-666,464

Finding the Third Proportional to 311,128 and 666,464

Calculator

Solution

The third proportional to 311,128 and 666,464 is: 1,427,625.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,128 : 666,464 = 666,464 : x
  2. Step 2: Convert to fraction form
    311,128/666,464 = 666,464/x
  3. Step 3: Cross multiply
    311,128x = 666,464 × 666,464
  4. Step 4: Simplify right side
    311,128x = 444,174,263,296
  5. Step 5: Solve for x
    x = 444,174,263,296/311,128
  6. Step 6: Final answer
    x = 1,427,625.49

Related Problems

Find third proportional to 155,564 and 333,232
Half scale
Find third proportional to 622,256 and 1,332,928
Double scale
Find third proportional to 311,130 and 666,468
Similar ratio
Find third proportional to 466,692 and 999,696
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.