Home / 292,902-428,985

Finding the Third Proportional to 292,902 and 428,985

Calculator

Solution

The third proportional to 292,902 and 428,985 is: 628,292.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,902 : 428,985 = 428,985 : x
  2. Step 2: Convert to fraction form
    292,902/428,985 = 428,985/x
  3. Step 3: Cross multiply
    292,902x = 428,985 × 428,985
  4. Step 4: Simplify right side
    292,902x = 184,028,130,225
  5. Step 5: Solve for x
    x = 184,028,130,225/292,902
  6. Step 6: Final answer
    x = 628,292.50

Related Problems

Find third proportional to 146,451 and 214,492.50
Half scale
Find third proportional to 585,804 and 857,970
Double scale
Find third proportional to 292,904 and 428,988
Similar ratio
Find third proportional to 439,353 and 643,477.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.