Home / 515,785-788,498

Finding the Third Proportional to 515,785 and 788,498

Calculator

Solution

The third proportional to 515,785 and 788,498 is: 1,205,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,785 : 788,498 = 788,498 : x
  2. Step 2: Convert to fraction form
    515,785/788,498 = 788,498/x
  3. Step 3: Cross multiply
    515,785x = 788,498 × 788,498
  4. Step 4: Simplify right side
    515,785x = 621,729,096,004
  5. Step 5: Solve for x
    x = 621,729,096,004/515,785
  6. Step 6: Final answer
    x = 1,205,403.60

Related Problems

Find third proportional to 257,892.50 and 394,249
Half scale
Find third proportional to 1,031,570 and 1,576,996
Double scale
Find third proportional to 515,787 and 788,501
Similar ratio
Find third proportional to 773,677.50 and 1,182,747
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.