Home / 421,069.50-647,221.50

Finding the Third Proportional to 421,069.50 and 647,221.50

Calculator

Solution

The third proportional to 421,069.50 and 647,221.50 is: 994,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,069.50 : 647,221.50 = 647,221.50 : x
  2. Step 2: Convert to fraction form
    421,069.50/647,221.50 = 647,221.50/x
  3. Step 3: Cross multiply
    421,069.50x = 647,221.50 × 647,221.50
  4. Step 4: Simplify right side
    421,069.50x = 418,895,670,062.25
  5. Step 5: Solve for x
    x = 418,895,670,062.25/421,069.50
  6. Step 6: Final answer
    x = 994,837.36

Related Problems

Find third proportional to 210,534.75 and 323,610.75
Half scale
Find third proportional to 842,139 and 1,294,443
Double scale
Find third proportional to 421,072 and 647,225
Similar ratio
Find third proportional to 631,604.25 and 970,832.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.