Home / 489,354-748,658

Finding the Third Proportional to 489,354 and 748,658

Calculator

Solution

The third proportional to 489,354 and 748,658 is: 1,145,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,354 : 748,658 = 748,658 : x
  2. Step 2: Convert to fraction form
    489,354/748,658 = 748,658/x
  3. Step 3: Cross multiply
    489,354x = 748,658 × 748,658
  4. Step 4: Simplify right side
    489,354x = 560,488,800,964
  5. Step 5: Solve for x
    x = 560,488,800,964/489,354
  6. Step 6: Final answer
    x = 1,145,364.71

Related Problems

Find third proportional to 244,677 and 374,329
Half scale
Find third proportional to 978,708 and 1,497,316
Double scale
Find third proportional to 489,356 and 748,661
Similar ratio
Find third proportional to 734,031 and 1,122,987
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.