Home / 438,320-655,711

Finding the Third Proportional to 438,320 and 655,711

Calculator

Solution

The third proportional to 438,320 and 655,711 is: 980,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,320 : 655,711 = 655,711 : x
  2. Step 2: Convert to fraction form
    438,320/655,711 = 655,711/x
  3. Step 3: Cross multiply
    438,320x = 655,711 × 655,711
  4. Step 4: Simplify right side
    438,320x = 429,956,915,521
  5. Step 5: Solve for x
    x = 429,956,915,521/438,320
  6. Step 6: Final answer
    x = 980,920.14

Related Problems

Find third proportional to 219,160 and 327,855.50
Half scale
Find third proportional to 876,640 and 1,311,422
Double scale
Find third proportional to 438,322 and 655,714
Similar ratio
Find third proportional to 657,480 and 983,566.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.