Home / 412,887-638,124

Finding the Third Proportional to 412,887 and 638,124

Calculator

Solution

The third proportional to 412,887 and 638,124 is: 986,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,887 : 638,124 = 638,124 : x
  2. Step 2: Convert to fraction form
    412,887/638,124 = 638,124/x
  3. Step 3: Cross multiply
    412,887x = 638,124 × 638,124
  4. Step 4: Simplify right side
    412,887x = 407,202,239,376
  5. Step 5: Solve for x
    x = 407,202,239,376/412,887
  6. Step 6: Final answer
    x = 986,231.68

Related Problems

Find third proportional to 206,443.50 and 319,062
Half scale
Find third proportional to 825,774 and 1,276,248
Double scale
Find third proportional to 412,889 and 638,127
Similar ratio
Find third proportional to 619,330.50 and 957,186
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.