Home / 421,240-913,976

Finding the Third Proportional to 421,240 and 913,976

Calculator

Solution

The third proportional to 421,240 and 913,976 is: 1,983,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,240 : 913,976 = 913,976 : x
  2. Step 2: Convert to fraction form
    421,240/913,976 = 913,976/x
  3. Step 3: Cross multiply
    421,240x = 913,976 × 913,976
  4. Step 4: Simplify right side
    421,240x = 835,352,128,576
  5. Step 5: Solve for x
    x = 835,352,128,576/421,240
  6. Step 6: Final answer
    x = 1,983,078.84

Related Problems

Find third proportional to 210,620 and 456,988
Half scale
Find third proportional to 842,480 and 1,827,952
Double scale
Find third proportional to 421,242 and 913,980
Similar ratio
Find third proportional to 631,860 and 1,370,964
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.