Home / 420,300-902,808

Finding the Third Proportional to 420,300 and 902,808

Calculator

Solution

The third proportional to 420,300 and 902,808 is: 1,939,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,300 : 902,808 = 902,808 : x
  2. Step 2: Convert to fraction form
    420,300/902,808 = 902,808/x
  3. Step 3: Cross multiply
    420,300x = 902,808 × 902,808
  4. Step 4: Simplify right side
    420,300x = 815,062,284,864
  5. Step 5: Solve for x
    x = 815,062,284,864/420,300
  6. Step 6: Final answer
    x = 1,939,239.32

Related Problems

Find third proportional to 210,150 and 451,404
Half scale
Find third proportional to 840,600 and 1,805,616
Double scale
Find third proportional to 420,302 and 902,812
Similar ratio
Find third proportional to 630,450 and 1,354,212
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.