Home / 274,590-420,633

Finding the Third Proportional to 274,590 and 420,633

Calculator

Solution

The third proportional to 274,590 and 420,633 is: 644,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,590 : 420,633 = 420,633 : x
  2. Step 2: Convert to fraction form
    274,590/420,633 = 420,633/x
  3. Step 3: Cross multiply
    274,590x = 420,633 × 420,633
  4. Step 4: Simplify right side
    274,590x = 176,932,120,689
  5. Step 5: Solve for x
    x = 176,932,120,689/274,590
  6. Step 6: Final answer
    x = 644,350.20

Related Problems

Find third proportional to 137,295 and 210,316.50
Half scale
Find third proportional to 549,180 and 841,266
Double scale
Find third proportional to 274,592 and 420,636
Similar ratio
Find third proportional to 411,885 and 630,949.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.