Home / 418,191-665,423

Finding the Third Proportional to 418,191 and 665,423

Calculator

Solution

The third proportional to 418,191 and 665,423 is: 1,058,817.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,191 : 665,423 = 665,423 : x
  2. Step 2: Convert to fraction form
    418,191/665,423 = 665,423/x
  3. Step 3: Cross multiply
    418,191x = 665,423 × 665,423
  4. Step 4: Simplify right side
    418,191x = 442,787,768,929
  5. Step 5: Solve for x
    x = 442,787,768,929/418,191
  6. Step 6: Final answer
    x = 1,058,817.07

Related Problems

Find third proportional to 209,095.50 and 332,711.50
Half scale
Find third proportional to 836,382 and 1,330,846
Double scale
Find third proportional to 418,193 and 665,426
Similar ratio
Find third proportional to 627,286.50 and 998,134.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.