Home / 378,856-631,340

Finding the Third Proportional to 378,856 and 631,340

Calculator

Solution

The third proportional to 378,856 and 631,340 is: 1,052,088.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,856 : 631,340 = 631,340 : x
  2. Step 2: Convert to fraction form
    378,856/631,340 = 631,340/x
  3. Step 3: Cross multiply
    378,856x = 631,340 × 631,340
  4. Step 4: Simplify right side
    378,856x = 398,590,195,600
  5. Step 5: Solve for x
    x = 398,590,195,600/378,856
  6. Step 6: Final answer
    x = 1,052,088.91

Related Problems

Find third proportional to 189,428 and 315,670
Half scale
Find third proportional to 757,712 and 1,262,680
Double scale
Find third proportional to 378,858 and 631,343
Similar ratio
Find third proportional to 568,284 and 947,010
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.