Home / 290,928-426,800

Finding the Third Proportional to 290,928 and 426,800

Calculator

Solution

The third proportional to 290,928 and 426,800 is: 626,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,928 : 426,800 = 426,800 : x
  2. Step 2: Convert to fraction form
    290,928/426,800 = 426,800/x
  3. Step 3: Cross multiply
    290,928x = 426,800 × 426,800
  4. Step 4: Simplify right side
    290,928x = 182,158,240,000
  5. Step 5: Solve for x
    x = 182,158,240,000/290,928
  6. Step 6: Final answer
    x = 626,128.25

Related Problems

Find third proportional to 145,464 and 213,400
Half scale
Find third proportional to 581,856 and 853,600
Double scale
Find third proportional to 290,930 and 426,803
Similar ratio
Find third proportional to 436,392 and 640,200
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.