Home / 381,100-812,808

Finding the Third Proportional to 381,100 and 812,808

Calculator

Solution

The third proportional to 381,100 and 812,808 is: 1,733,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,100 : 812,808 = 812,808 : x
  2. Step 2: Convert to fraction form
    381,100/812,808 = 812,808/x
  3. Step 3: Cross multiply
    381,100x = 812,808 × 812,808
  4. Step 4: Simplify right side
    381,100x = 660,656,844,864
  5. Step 5: Solve for x
    x = 660,656,844,864/381,100
  6. Step 6: Final answer
    x = 1,733,552.47

Related Problems

Find third proportional to 190,550 and 406,404
Half scale
Find third proportional to 762,200 and 1,625,616
Double scale
Find third proportional to 381,102 and 812,812
Similar ratio
Find third proportional to 571,650 and 1,219,212
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.