Home / 310,032-438,815

Finding the Third Proportional to 310,032 and 438,815

Calculator

Solution

The third proportional to 310,032 and 438,815 is: 621,092.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,032 : 438,815 = 438,815 : x
  2. Step 2: Convert to fraction form
    310,032/438,815 = 438,815/x
  3. Step 3: Cross multiply
    310,032x = 438,815 × 438,815
  4. Step 4: Simplify right side
    310,032x = 192,558,604,225
  5. Step 5: Solve for x
    x = 192,558,604,225/310,032
  6. Step 6: Final answer
    x = 621,092.68

Related Problems

Find third proportional to 155,016 and 219,407.50
Half scale
Find third proportional to 620,064 and 877,630
Double scale
Find third proportional to 310,034 and 438,818
Similar ratio
Find third proportional to 465,048 and 658,222.50
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.