Home / 389,228-842,428

Finding the Third Proportional to 389,228 and 842,428

Calculator

Solution

The third proportional to 389,228 and 842,428 is: 1,823,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,228 : 842,428 = 842,428 : x
  2. Step 2: Convert to fraction form
    389,228/842,428 = 842,428/x
  3. Step 3: Cross multiply
    389,228x = 842,428 × 842,428
  4. Step 4: Simplify right side
    389,228x = 709,684,935,184
  5. Step 5: Solve for x
    x = 709,684,935,184/389,228
  6. Step 6: Final answer
    x = 1,823,314.19

Related Problems

Find third proportional to 194,614 and 421,214
Half scale
Find third proportional to 778,456 and 1,684,856
Double scale
Find third proportional to 389,230 and 842,432
Similar ratio
Find third proportional to 583,842 and 1,263,642
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.