Home / 490,140-749,628

Finding the Third Proportional to 490,140 and 749,628

Calculator

Solution

The third proportional to 490,140 and 749,628 is: 1,146,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,140 : 749,628 = 749,628 : x
  2. Step 2: Convert to fraction form
    490,140/749,628 = 749,628/x
  3. Step 3: Cross multiply
    490,140x = 749,628 × 749,628
  4. Step 4: Simplify right side
    490,140x = 561,942,138,384
  5. Step 5: Solve for x
    x = 561,942,138,384/490,140
  6. Step 6: Final answer
    x = 1,146,493.12

Related Problems

Find third proportional to 245,070 and 374,814
Half scale
Find third proportional to 980,280 and 1,499,256
Double scale
Find third proportional to 490,142 and 749,631
Similar ratio
Find third proportional to 735,210 and 1,124,442
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.