Home / 280,460-423,622

Finding the Third Proportional to 280,460 and 423,622

Calculator

Solution

The third proportional to 280,460 and 423,622 is: 639,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,460 : 423,622 = 423,622 : x
  2. Step 2: Convert to fraction form
    280,460/423,622 = 423,622/x
  3. Step 3: Cross multiply
    280,460x = 423,622 × 423,622
  4. Step 4: Simplify right side
    280,460x = 179,455,598,884
  5. Step 5: Solve for x
    x = 179,455,598,884/280,460
  6. Step 6: Final answer
    x = 639,861.65

Related Problems

Find third proportional to 140,230 and 211,811
Half scale
Find third proportional to 560,920 and 847,244
Double scale
Find third proportional to 280,462 and 423,625
Similar ratio
Find third proportional to 420,690 and 635,433
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.