Home / 389,578-810,332

Finding the Third Proportional to 389,578 and 810,332

Calculator

Solution

The third proportional to 389,578 and 810,332 is: 1,685,510.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,578 : 810,332 = 810,332 : x
  2. Step 2: Convert to fraction form
    389,578/810,332 = 810,332/x
  3. Step 3: Cross multiply
    389,578x = 810,332 × 810,332
  4. Step 4: Simplify right side
    389,578x = 656,637,950,224
  5. Step 5: Solve for x
    x = 656,637,950,224/389,578
  6. Step 6: Final answer
    x = 1,685,510.86

Related Problems

Find third proportional to 194,789 and 405,166
Half scale
Find third proportional to 779,156 and 1,620,664
Double scale
Find third proportional to 389,580 and 810,336
Similar ratio
Find third proportional to 584,367 and 1,215,498
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.