Home / 558,400-1,240,640

Finding the Third Proportional to 558,400 and 1,240,640

Calculator

Solution

The third proportional to 558,400 and 1,240,640 is: 2,756,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,400 : 1,240,640 = 1,240,640 : x
  2. Step 2: Convert to fraction form
    558,400/1,240,640 = 1,240,640/x
  3. Step 3: Cross multiply
    558,400x = 1,240,640 × 1,240,640
  4. Step 4: Simplify right side
    558,400x = 1,539,187,609,600
  5. Step 5: Solve for x
    x = 1,539,187,609,600/558,400
  6. Step 6: Final answer
    x = 2,756,424.80

Related Problems

Find third proportional to 279,200 and 620,320
Half scale
Find third proportional to 1,116,800 and 2,481,280
Double scale
Find third proportional to 558,402 and 1,240,644
Similar ratio
Find third proportional to 837,600 and 1,860,960
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.