Home / 409,640-891,088

Finding the Third Proportional to 409,640 and 891,088

Calculator

Solution

The third proportional to 409,640 and 891,088 is: 1,938,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,640 : 891,088 = 891,088 : x
  2. Step 2: Convert to fraction form
    409,640/891,088 = 891,088/x
  3. Step 3: Cross multiply
    409,640x = 891,088 × 891,088
  4. Step 4: Simplify right side
    409,640x = 794,037,823,744
  5. Step 5: Solve for x
    x = 794,037,823,744/409,640
  6. Step 6: Final answer
    x = 1,938,379.61

Related Problems

Find third proportional to 204,820 and 445,544
Half scale
Find third proportional to 819,280 and 1,782,176
Double scale
Find third proportional to 409,642 and 891,092
Similar ratio
Find third proportional to 614,460 and 1,336,632
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.