Home / 299,678-637,498

Finding the Third Proportional to 299,678 and 637,498

Calculator

Solution

The third proportional to 299,678 and 637,498 is: 1,356,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,678 : 637,498 = 637,498 : x
  2. Step 2: Convert to fraction form
    299,678/637,498 = 637,498/x
  3. Step 3: Cross multiply
    299,678x = 637,498 × 637,498
  4. Step 4: Simplify right side
    299,678x = 406,403,700,004
  5. Step 5: Solve for x
    x = 406,403,700,004/299,678
  6. Step 6: Final answer
    x = 1,356,134.58

Related Problems

Find third proportional to 149,839 and 318,749
Half scale
Find third proportional to 599,356 and 1,274,996
Double scale
Find third proportional to 299,680 and 637,502
Similar ratio
Find third proportional to 449,517 and 956,247
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.