Home / 317,590-451,431

Finding the Third Proportional to 317,590 and 451,431

Calculator

Solution

The third proportional to 317,590 and 451,431 is: 641,676.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,590 : 451,431 = 451,431 : x
  2. Step 2: Convert to fraction form
    317,590/451,431 = 451,431/x
  3. Step 3: Cross multiply
    317,590x = 451,431 × 451,431
  4. Step 4: Simplify right side
    317,590x = 203,789,947,761
  5. Step 5: Solve for x
    x = 203,789,947,761/317,590
  6. Step 6: Final answer
    x = 641,676.21

Related Problems

Find third proportional to 158,795 and 225,715.50
Half scale
Find third proportional to 635,180 and 902,862
Double scale
Find third proportional to 317,592 and 451,434
Similar ratio
Find third proportional to 476,385 and 677,146.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.