Home / 287,957-396,943

Finding the Third Proportional to 287,957 and 396,943

Calculator

Solution

The third proportional to 287,957 and 396,943 is: 547,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,957 : 396,943 = 396,943 : x
  2. Step 2: Convert to fraction form
    287,957/396,943 = 396,943/x
  3. Step 3: Cross multiply
    287,957x = 396,943 × 396,943
  4. Step 4: Simplify right side
    287,957x = 157,563,745,249
  5. Step 5: Solve for x
    x = 157,563,745,249/287,957
  6. Step 6: Final answer
    x = 547,178.03

Related Problems

Find third proportional to 143,978.50 and 198,471.50
Half scale
Find third proportional to 575,914 and 793,886
Double scale
Find third proportional to 287,959 and 396,946
Similar ratio
Find third proportional to 431,935.50 and 595,414.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.