Home / 457,067-990,405

Finding the Third Proportional to 457,067 and 990,405

Calculator

Solution

The third proportional to 457,067 and 990,405 is: 2,146,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,067 : 990,405 = 990,405 : x
  2. Step 2: Convert to fraction form
    457,067/990,405 = 990,405/x
  3. Step 3: Cross multiply
    457,067x = 990,405 × 990,405
  4. Step 4: Simplify right side
    457,067x = 980,902,064,025
  5. Step 5: Solve for x
    x = 980,902,064,025/457,067
  6. Step 6: Final answer
    x = 2,146,079.38

Related Problems

Find third proportional to 228,533.50 and 495,202.50
Half scale
Find third proportional to 914,134 and 1,980,810
Double scale
Find third proportional to 457,069 and 990,409
Similar ratio
Find third proportional to 685,600.50 and 1,485,607.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.