Home / 427,457-664,520

Finding the Third Proportional to 427,457 and 664,520

Calculator

Solution

The third proportional to 427,457 and 664,520 is: 1,033,055.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,457 : 664,520 = 664,520 : x
  2. Step 2: Convert to fraction form
    427,457/664,520 = 664,520/x
  3. Step 3: Cross multiply
    427,457x = 664,520 × 664,520
  4. Step 4: Simplify right side
    427,457x = 441,586,830,400
  5. Step 5: Solve for x
    x = 441,586,830,400/427,457
  6. Step 6: Final answer
    x = 1,033,055.56

Related Problems

Find third proportional to 213,728.50 and 332,260
Half scale
Find third proportional to 854,914 and 1,329,040
Double scale
Find third proportional to 427,459 and 664,523
Similar ratio
Find third proportional to 641,185.50 and 996,780
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.