Home / 540,918-811,458

Finding the Third Proportional to 540,918 and 811,458

Calculator

Solution

The third proportional to 540,918 and 811,458 is: 1,217,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,918 : 811,458 = 811,458 : x
  2. Step 2: Convert to fraction form
    540,918/811,458 = 811,458/x
  3. Step 3: Cross multiply
    540,918x = 811,458 × 811,458
  4. Step 4: Simplify right side
    540,918x = 658,464,085,764
  5. Step 5: Solve for x
    x = 658,464,085,764/540,918
  6. Step 6: Final answer
    x = 1,217,308.51

Related Problems

Find third proportional to 270,459 and 405,729
Half scale
Find third proportional to 1,081,836 and 1,622,916
Double scale
Find third proportional to 540,920 and 811,461
Similar ratio
Find third proportional to 811,377 and 1,217,187
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.