Home / 315,338-489,588

Finding the Third Proportional to 315,338 and 489,588

Calculator

Solution

The third proportional to 315,338 and 489,588 is: 760,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,338 : 489,588 = 489,588 : x
  2. Step 2: Convert to fraction form
    315,338/489,588 = 489,588/x
  3. Step 3: Cross multiply
    315,338x = 489,588 × 489,588
  4. Step 4: Simplify right side
    315,338x = 239,696,409,744
  5. Step 5: Solve for x
    x = 239,696,409,744/315,338
  6. Step 6: Final answer
    x = 760,125.36

Related Problems

Find third proportional to 157,669 and 244,794
Half scale
Find third proportional to 630,676 and 979,176
Double scale
Find third proportional to 315,340 and 489,591
Similar ratio
Find third proportional to 473,007 and 734,382
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.