Home / 311,762-669,856

Finding the Third Proportional to 311,762 and 669,856

Calculator

Solution

The third proportional to 311,762 and 669,856 is: 1,439,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,762 : 669,856 = 669,856 : x
  2. Step 2: Convert to fraction form
    311,762/669,856 = 669,856/x
  3. Step 3: Cross multiply
    311,762x = 669,856 × 669,856
  4. Step 4: Simplify right side
    311,762x = 448,707,060,736
  5. Step 5: Solve for x
    x = 448,707,060,736/311,762
  6. Step 6: Final answer
    x = 1,439,261.55

Related Problems

Find third proportional to 155,881 and 334,928
Half scale
Find third proportional to 623,524 and 1,339,712
Double scale
Find third proportional to 311,764 and 669,860
Similar ratio
Find third proportional to 467,643 and 1,004,784
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.