Home / 389,648-585,615

Finding the Third Proportional to 389,648 and 585,615

Calculator

Solution

The third proportional to 389,648 and 585,615 is: 880,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,648 : 585,615 = 585,615 : x
  2. Step 2: Convert to fraction form
    389,648/585,615 = 585,615/x
  3. Step 3: Cross multiply
    389,648x = 585,615 × 585,615
  4. Step 4: Simplify right side
    389,648x = 342,944,928,225
  5. Step 5: Solve for x
    x = 342,944,928,225/389,648
  6. Step 6: Final answer
    x = 880,140.35

Related Problems

Find third proportional to 194,824 and 292,807.50
Half scale
Find third proportional to 779,296 and 1,171,230
Double scale
Find third proportional to 389,650 and 585,618
Similar ratio
Find third proportional to 584,472 and 878,422.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.