Home / 415,852-643,650

Finding the Third Proportional to 415,852 and 643,650

Calculator

Solution

The third proportional to 415,852 and 643,650 is: 996,232.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,852 : 643,650 = 643,650 : x
  2. Step 2: Convert to fraction form
    415,852/643,650 = 643,650/x
  3. Step 3: Cross multiply
    415,852x = 643,650 × 643,650
  4. Step 4: Simplify right side
    415,852x = 414,285,322,500
  5. Step 5: Solve for x
    x = 414,285,322,500/415,852
  6. Step 6: Final answer
    x = 996,232.61

Related Problems

Find third proportional to 207,926 and 321,825
Half scale
Find third proportional to 831,704 and 1,287,300
Double scale
Find third proportional to 415,854 and 643,653
Similar ratio
Find third proportional to 623,778 and 965,475
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.