Home / 310,045-438,837

Finding the Third Proportional to 310,045 and 438,837

Calculator

Solution

The third proportional to 310,045 and 438,837 is: 621,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,045 : 438,837 = 438,837 : x
  2. Step 2: Convert to fraction form
    310,045/438,837 = 438,837/x
  3. Step 3: Cross multiply
    310,045x = 438,837 × 438,837
  4. Step 4: Simplify right side
    310,045x = 192,577,912,569
  5. Step 5: Solve for x
    x = 192,577,912,569/310,045
  6. Step 6: Final answer
    x = 621,128.91

Related Problems

Find third proportional to 155,022.50 and 219,418.50
Half scale
Find third proportional to 620,090 and 877,674
Double scale
Find third proportional to 310,047 and 438,840
Similar ratio
Find third proportional to 465,067.50 and 658,255.50
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.