Home / 310,869-664,398

Finding the Third Proportional to 310,869 and 664,398

Calculator

Solution

The third proportional to 310,869 and 664,398 is: 1,419,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,869 : 664,398 = 664,398 : x
  2. Step 2: Convert to fraction form
    310,869/664,398 = 664,398/x
  3. Step 3: Cross multiply
    310,869x = 664,398 × 664,398
  4. Step 4: Simplify right side
    310,869x = 441,424,702,404
  5. Step 5: Solve for x
    x = 441,424,702,404/310,869
  6. Step 6: Final answer
    x = 1,419,970.16

Related Problems

Find third proportional to 155,434.50 and 332,199
Half scale
Find third proportional to 621,738 and 1,328,796
Double scale
Find third proportional to 310,871 and 664,402
Similar ratio
Find third proportional to 466,303.50 and 996,597
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.