Home / 258,930-553,860

Finding the Third Proportional to 258,930 and 553,860

Calculator

Solution

The third proportional to 258,930 and 553,860 is: 1,184,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,930 : 553,860 = 553,860 : x
  2. Step 2: Convert to fraction form
    258,930/553,860 = 553,860/x
  3. Step 3: Cross multiply
    258,930x = 553,860 × 553,860
  4. Step 4: Simplify right side
    258,930x = 306,760,899,600
  5. Step 5: Solve for x
    x = 306,760,899,600/258,930
  6. Step 6: Final answer
    x = 1,184,725.21

Related Problems

Find third proportional to 129,465 and 276,930
Half scale
Find third proportional to 517,860 and 1,107,720
Double scale
Find third proportional to 258,932 and 553,864
Similar ratio
Find third proportional to 388,395 and 830,790
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.