Home / 290,455-629,156

Finding the Third Proportional to 290,455 and 629,156

Calculator

Solution

The third proportional to 290,455 and 629,156 is: 1,362,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,455 : 629,156 = 629,156 : x
  2. Step 2: Convert to fraction form
    290,455/629,156 = 629,156/x
  3. Step 3: Cross multiply
    290,455x = 629,156 × 629,156
  4. Step 4: Simplify right side
    290,455x = 395,837,272,336
  5. Step 5: Solve for x
    x = 395,837,272,336/290,455
  6. Step 6: Final answer
    x = 1,362,817.90

Related Problems

Find third proportional to 145,227.50 and 314,578
Half scale
Find third proportional to 580,910 and 1,258,312
Double scale
Find third proportional to 290,457 and 629,160
Similar ratio
Find third proportional to 435,682.50 and 943,734
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.