Home / 420,948-631,902

Finding the Third Proportional to 420,948 and 631,902

Calculator

Solution

The third proportional to 420,948 and 631,902 is: 948,573.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,948 : 631,902 = 631,902 : x
  2. Step 2: Convert to fraction form
    420,948/631,902 = 631,902/x
  3. Step 3: Cross multiply
    420,948x = 631,902 × 631,902
  4. Step 4: Simplify right side
    420,948x = 399,300,137,604
  5. Step 5: Solve for x
    x = 399,300,137,604/420,948
  6. Step 6: Final answer
    x = 948,573.55

Related Problems

Find third proportional to 210,474 and 315,951
Half scale
Find third proportional to 841,896 and 1,263,804
Double scale
Find third proportional to 420,950 and 631,905
Similar ratio
Find third proportional to 631,422 and 947,853
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.