Home / 306,880-656,404

Finding the Third Proportional to 306,880 and 656,404

Calculator

Solution

The third proportional to 306,880 and 656,404 is: 1,404,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,880 : 656,404 = 656,404 : x
  2. Step 2: Convert to fraction form
    306,880/656,404 = 656,404/x
  3. Step 3: Cross multiply
    306,880x = 656,404 × 656,404
  4. Step 4: Simplify right side
    306,880x = 430,866,211,216
  5. Step 5: Solve for x
    x = 430,866,211,216/306,880
  6. Step 6: Final answer
    x = 1,404,021.80

Related Problems

Find third proportional to 153,440 and 328,202
Half scale
Find third proportional to 613,760 and 1,312,808
Double scale
Find third proportional to 306,882 and 656,408
Similar ratio
Find third proportional to 460,320 and 984,606
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.