Home / 287,090-628,612

Finding the Third Proportional to 287,090 and 628,612

Calculator

Solution

The third proportional to 287,090 and 628,612 is: 1,376,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,090 : 628,612 = 628,612 : x
  2. Step 2: Convert to fraction form
    287,090/628,612 = 628,612/x
  3. Step 3: Cross multiply
    287,090x = 628,612 × 628,612
  4. Step 4: Simplify right side
    287,090x = 395,153,046,544
  5. Step 5: Solve for x
    x = 395,153,046,544/287,090
  6. Step 6: Final answer
    x = 1,376,408.26

Related Problems

Find third proportional to 143,545 and 314,306
Half scale
Find third proportional to 574,180 and 1,257,224
Double scale
Find third proportional to 287,092 and 628,616
Similar ratio
Find third proportional to 430,635 and 942,918
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.