Home / 421,754-909,940

Finding the Third Proportional to 421,754 and 909,940

Calculator

Solution

The third proportional to 421,754 and 909,940 is: 1,963,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,754 : 909,940 = 909,940 : x
  2. Step 2: Convert to fraction form
    421,754/909,940 = 909,940/x
  3. Step 3: Cross multiply
    421,754x = 909,940 × 909,940
  4. Step 4: Simplify right side
    421,754x = 827,990,803,600
  5. Step 5: Solve for x
    x = 827,990,803,600/421,754
  6. Step 6: Final answer
    x = 1,963,207.94

Related Problems

Find third proportional to 210,877 and 454,970
Half scale
Find third proportional to 843,508 and 1,819,880
Double scale
Find third proportional to 421,756 and 909,944
Similar ratio
Find third proportional to 632,631 and 1,364,910
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.