Home / 445,539-689,416.50

Finding the Third Proportional to 445,539 and 689,416.50

Calculator

Solution

The third proportional to 445,539 and 689,416.50 is: 1,066,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,539 : 689,416.50 = 689,416.50 : x
  2. Step 2: Convert to fraction form
    445,539/689,416.50 = 689,416.50/x
  3. Step 3: Cross multiply
    445,539x = 689,416.50 × 689,416.50
  4. Step 4: Simplify right side
    445,539x = 475,295,110,472.25
  5. Step 5: Solve for x
    x = 475,295,110,472.25/445,539
  6. Step 6: Final answer
    x = 1,066,786.77

Related Problems

Find third proportional to 222,769.50 and 344,708.25
Half scale
Find third proportional to 891,078 and 1,378,833
Double scale
Find third proportional to 445,541 and 689,420
Similar ratio
Find third proportional to 668,308.50 and 1,034,124.75
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.