Home / 405,826-630,842

Finding the Third Proportional to 405,826 and 630,842

Calculator

Solution

The third proportional to 405,826 and 630,842 is: 980,621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,826 : 630,842 = 630,842 : x
  2. Step 2: Convert to fraction form
    405,826/630,842 = 630,842/x
  3. Step 3: Cross multiply
    405,826x = 630,842 × 630,842
  4. Step 4: Simplify right side
    405,826x = 397,961,628,964
  5. Step 5: Solve for x
    x = 397,961,628,964/405,826
  6. Step 6: Final answer
    x = 980,621.32

Related Problems

Find third proportional to 202,913 and 315,421
Half scale
Find third proportional to 811,652 and 1,261,684
Double scale
Find third proportional to 405,828 and 630,845
Similar ratio
Find third proportional to 608,739 and 946,263
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.