Home / 404,992-643,658

Finding the Third Proportional to 404,992 and 643,658

Calculator

Solution

The third proportional to 404,992 and 643,658 is: 1,022,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,992 : 643,658 = 643,658 : x
  2. Step 2: Convert to fraction form
    404,992/643,658 = 643,658/x
  3. Step 3: Cross multiply
    404,992x = 643,658 × 643,658
  4. Step 4: Simplify right side
    404,992x = 414,295,620,964
  5. Step 5: Solve for x
    x = 414,295,620,964/404,992
  6. Step 6: Final answer
    x = 1,022,972.36

Related Problems

Find third proportional to 202,496 and 321,829
Half scale
Find third proportional to 809,984 and 1,287,316
Double scale
Find third proportional to 404,994 and 643,661
Similar ratio
Find third proportional to 607,488 and 965,487
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.