Home / 280,110-420,364

Finding the Third Proportional to 280,110 and 420,364

Calculator

Solution

The third proportional to 280,110 and 420,364 is: 630,844.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,110 : 420,364 = 420,364 : x
  2. Step 2: Convert to fraction form
    280,110/420,364 = 420,364/x
  3. Step 3: Cross multiply
    280,110x = 420,364 × 420,364
  4. Step 4: Simplify right side
    280,110x = 176,705,892,496
  5. Step 5: Solve for x
    x = 176,705,892,496/280,110
  6. Step 6: Final answer
    x = 630,844.64

Related Problems

Find third proportional to 140,055 and 210,182
Half scale
Find third proportional to 560,220 and 840,728
Double scale
Find third proportional to 280,112 and 420,367
Similar ratio
Find third proportional to 420,165 and 630,546
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.