Home / 477,420-669,258

Finding the Third Proportional to 477,420 and 669,258

Calculator

Solution

The third proportional to 477,420 and 669,258 is: 938,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,420 : 669,258 = 669,258 : x
  2. Step 2: Convert to fraction form
    477,420/669,258 = 669,258/x
  3. Step 3: Cross multiply
    477,420x = 669,258 × 669,258
  4. Step 4: Simplify right side
    477,420x = 447,906,270,564
  5. Step 5: Solve for x
    x = 447,906,270,564/477,420
  6. Step 6: Final answer
    x = 938,180.79

Related Problems

Find third proportional to 238,710 and 334,629
Half scale
Find third proportional to 954,840 and 1,338,516
Double scale
Find third proportional to 477,422 and 669,261
Similar ratio
Find third proportional to 716,130 and 1,003,887
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.