Home / 421,931-563,628

Finding the Third Proportional to 421,931 and 563,628

Calculator

Solution

The third proportional to 421,931 and 563,628 is: 752,911.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,931 : 563,628 = 563,628 : x
  2. Step 2: Convert to fraction form
    421,931/563,628 = 563,628/x
  3. Step 3: Cross multiply
    421,931x = 563,628 × 563,628
  4. Step 4: Simplify right side
    421,931x = 317,676,522,384
  5. Step 5: Solve for x
    x = 317,676,522,384/421,931
  6. Step 6: Final answer
    x = 752,911.07

Related Problems

Find third proportional to 210,965.50 and 281,814
Half scale
Find third proportional to 843,862 and 1,127,256
Double scale
Find third proportional to 421,933 and 563,631
Similar ratio
Find third proportional to 632,896.50 and 845,442
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.