Home / 442,512-686,340

Finding the Third Proportional to 442,512 and 686,340

Calculator

Solution

The third proportional to 442,512 and 686,340 is: 1,064,519.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,512 : 686,340 = 686,340 : x
  2. Step 2: Convert to fraction form
    442,512/686,340 = 686,340/x
  3. Step 3: Cross multiply
    442,512x = 686,340 × 686,340
  4. Step 4: Simplify right side
    442,512x = 471,062,595,600
  5. Step 5: Solve for x
    x = 471,062,595,600/442,512
  6. Step 6: Final answer
    x = 1,064,519.37

Related Problems

Find third proportional to 221,256 and 343,170
Half scale
Find third proportional to 885,024 and 1,372,680
Double scale
Find third proportional to 442,514 and 686,343
Similar ratio
Find third proportional to 663,768 and 1,029,510
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.