Home / 306,786-657,288

Finding the Third Proportional to 306,786 and 657,288

Calculator

Solution

The third proportional to 306,786 and 657,288 is: 1,408,237.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,786 : 657,288 = 657,288 : x
  2. Step 2: Convert to fraction form
    306,786/657,288 = 657,288/x
  3. Step 3: Cross multiply
    306,786x = 657,288 × 657,288
  4. Step 4: Simplify right side
    306,786x = 432,027,514,944
  5. Step 5: Solve for x
    x = 432,027,514,944/306,786
  6. Step 6: Final answer
    x = 1,408,237.39

Related Problems

Find third proportional to 153,393 and 328,644
Half scale
Find third proportional to 613,572 and 1,314,576
Double scale
Find third proportional to 306,788 and 657,292
Similar ratio
Find third proportional to 460,179 and 985,932
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.