Home / 287,088-628,608

Finding the Third Proportional to 287,088 and 628,608

Calculator

Solution

The third proportional to 287,088 and 628,608 is: 1,376,400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,088 : 628,608 = 628,608 : x
  2. Step 2: Convert to fraction form
    287,088/628,608 = 628,608/x
  3. Step 3: Cross multiply
    287,088x = 628,608 × 628,608
  4. Step 4: Simplify right side
    287,088x = 395,148,017,664
  5. Step 5: Solve for x
    x = 395,148,017,664/287,088
  6. Step 6: Final answer
    x = 1,376,400.33

Related Problems

Find third proportional to 143,544 and 314,304
Half scale
Find third proportional to 574,176 and 1,257,216
Double scale
Find third proportional to 287,090 and 628,612
Similar ratio
Find third proportional to 430,632 and 942,912
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.