Home / 311,556-677,784

Finding the Third Proportional to 311,556 and 677,784

Calculator

Solution

The third proportional to 311,556 and 677,784 is: 1,474,505.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,556 : 677,784 = 677,784 : x
  2. Step 2: Convert to fraction form
    311,556/677,784 = 677,784/x
  3. Step 3: Cross multiply
    311,556x = 677,784 × 677,784
  4. Step 4: Simplify right side
    311,556x = 459,391,150,656
  5. Step 5: Solve for x
    x = 459,391,150,656/311,556
  6. Step 6: Final answer
    x = 1,474,505.87

Related Problems

Find third proportional to 155,778 and 338,892
Half scale
Find third proportional to 623,112 and 1,355,568
Double scale
Find third proportional to 311,558 and 677,788
Similar ratio
Find third proportional to 467,334 and 1,016,676
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.