Home / 311,182-633,780

Finding the Third Proportional to 311,182 and 633,780

Calculator

Solution

The third proportional to 311,182 and 633,780 is: 1,290,810.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,182 : 633,780 = 633,780 : x
  2. Step 2: Convert to fraction form
    311,182/633,780 = 633,780/x
  3. Step 3: Cross multiply
    311,182x = 633,780 × 633,780
  4. Step 4: Simplify right side
    311,182x = 401,677,088,400
  5. Step 5: Solve for x
    x = 401,677,088,400/311,182
  6. Step 6: Final answer
    x = 1,290,810.81

Related Problems

Find third proportional to 155,591 and 316,890
Half scale
Find third proportional to 622,364 and 1,267,560
Double scale
Find third proportional to 311,184 and 633,784
Similar ratio
Find third proportional to 466,773 and 950,670
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.