Home / 421,128-920,984

Finding the Third Proportional to 421,128 and 920,984

Calculator

Solution

The third proportional to 421,128 and 920,984 is: 2,014,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,128 : 920,984 = 920,984 : x
  2. Step 2: Convert to fraction form
    421,128/920,984 = 920,984/x
  3. Step 3: Cross multiply
    421,128x = 920,984 × 920,984
  4. Step 4: Simplify right side
    421,128x = 848,211,528,256
  5. Step 5: Solve for x
    x = 848,211,528,256/421,128
  6. Step 6: Final answer
    x = 2,014,141.85

Related Problems

Find third proportional to 210,564 and 460,492
Half scale
Find third proportional to 842,256 and 1,841,968
Double scale
Find third proportional to 421,130 and 920,988
Similar ratio
Find third proportional to 631,692 and 1,381,476
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.