Home / 386,914-434,891

Finding the Third Proportional to 386,914 and 434,891

Calculator

Solution

The third proportional to 386,914 and 434,891 is: 488,817.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,914 : 434,891 = 434,891 : x
  2. Step 2: Convert to fraction form
    386,914/434,891 = 434,891/x
  3. Step 3: Cross multiply
    386,914x = 434,891 × 434,891
  4. Step 4: Simplify right side
    386,914x = 189,130,181,881
  5. Step 5: Solve for x
    x = 189,130,181,881/386,914
  6. Step 6: Final answer
    x = 488,817.11

Related Problems

Find third proportional to 193,457 and 217,445.50
Half scale
Find third proportional to 773,828 and 869,782
Double scale
Find third proportional to 386,916 and 434,893
Similar ratio
Find third proportional to 580,371 and 652,336.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.