Home / 287,145-422,425.13

Finding the Third Proportional to 287,145 and 422,425.13

Calculator

Solution

The third proportional to 287,145 and 422,425.13 is: 621,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,145 : 422,425.13 = 422,425.13 : x
  2. Step 2: Convert to fraction form
    287,145/422,425.13 = 422,425.13/x
  3. Step 3: Cross multiply
    287,145x = 422,425.13 × 422,425.13
  4. Step 4: Simplify right side
    287,145x = 178,442,986,231.27
  5. Step 5: Solve for x
    x = 178,442,986,231.27/287,145
  6. Step 6: Final answer
    x = 621,438.60

Related Problems

Find third proportional to 143,572.50 and 211,212.56
Half scale
Find third proportional to 574,290 and 844,850.25
Double scale
Find third proportional to 287,147 and 422,428
Similar ratio
Find third proportional to 430,717.50 and 633,637.69
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.