Home / 515,106-787,968

Finding the Third Proportional to 515,106 and 787,968

Calculator

Solution

The third proportional to 515,106 and 787,968 is: 1,205,370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,106 : 787,968 = 787,968 : x
  2. Step 2: Convert to fraction form
    515,106/787,968 = 787,968/x
  3. Step 3: Cross multiply
    515,106x = 787,968 × 787,968
  4. Step 4: Simplify right side
    515,106x = 620,893,569,024
  5. Step 5: Solve for x
    x = 620,893,569,024/515,106
  6. Step 6: Final answer
    x = 1,205,370.48

Related Problems

Find third proportional to 257,553 and 393,984
Half scale
Find third proportional to 1,030,212 and 1,575,936
Double scale
Find third proportional to 515,108 and 787,971
Similar ratio
Find third proportional to 772,659 and 1,181,952
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.