Home / 408,715-890,991

Finding the Third Proportional to 408,715 and 890,991

Calculator

Solution

The third proportional to 408,715 and 890,991 is: 1,942,343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,715 : 890,991 = 890,991 : x
  2. Step 2: Convert to fraction form
    408,715/890,991 = 890,991/x
  3. Step 3: Cross multiply
    408,715x = 890,991 × 890,991
  4. Step 4: Simplify right side
    408,715x = 793,864,962,081
  5. Step 5: Solve for x
    x = 793,864,962,081/408,715
  6. Step 6: Final answer
    x = 1,942,343.59

Related Problems

Find third proportional to 204,357.50 and 445,495.50
Half scale
Find third proportional to 817,430 and 1,781,982
Double scale
Find third proportional to 408,717 and 890,995
Similar ratio
Find third proportional to 613,072.50 and 1,336,486.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.