Home / 287,363-628,230

Finding the Third Proportional to 287,363 and 628,230

Calculator

Solution

The third proportional to 287,363 and 628,230 is: 1,373,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,363 : 628,230 = 628,230 : x
  2. Step 2: Convert to fraction form
    287,363/628,230 = 628,230/x
  3. Step 3: Cross multiply
    287,363x = 628,230 × 628,230
  4. Step 4: Simplify right side
    287,363x = 394,672,932,900
  5. Step 5: Solve for x
    x = 394,672,932,900/287,363
  6. Step 6: Final answer
    x = 1,373,429.89

Related Problems

Find third proportional to 143,681.50 and 314,115
Half scale
Find third proportional to 574,726 and 1,256,460
Double scale
Find third proportional to 287,365 and 628,234
Similar ratio
Find third proportional to 431,044.50 and 942,345
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.