Home / 421,119-913,178

Finding the Third Proportional to 421,119 and 913,178

Calculator

Solution

The third proportional to 421,119 and 913,178 is: 1,980,186.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,119 : 913,178 = 913,178 : x
  2. Step 2: Convert to fraction form
    421,119/913,178 = 913,178/x
  3. Step 3: Cross multiply
    421,119x = 913,178 × 913,178
  4. Step 4: Simplify right side
    421,119x = 833,894,059,684
  5. Step 5: Solve for x
    x = 833,894,059,684/421,119
  6. Step 6: Final answer
    x = 1,980,186.26

Related Problems

Find third proportional to 210,559.50 and 456,589
Half scale
Find third proportional to 842,238 and 1,826,356
Double scale
Find third proportional to 421,121 and 913,182
Similar ratio
Find third proportional to 631,678.50 and 1,369,767
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.