Home / 653,230-979,845-209,998

Finding the Fourth Proportional to 653,230, 979,845 and 209,998

Calculator

Solution

The fourth proportional to 653,230, 979,845 and 209,998 is: 314,997

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,230 : 979,845 = 209,998 : x
  2. Step 2: Convert to fraction form
    653,230/979,845 = 209,998/x
  3. Step 3: Cross multiply
    653,230x = 979,845 × 209,998
  4. Step 4: Simplify right side
    653,230x = 205,765,490,310
  5. Step 5: Solve for x
    x = 205,765,490,310/653,230
  6. Step 6: Final answer
    x = 314,997

Related Problems

Find fourth proportional to 326,615, 489,922.50 and 104,999
Half scale
Find fourth proportional to 1,306,460, 1,959,690 and 419,996
Double scale
Find fourth proportional to 653,231, 979,846.50 and 209,999
Similar ratio
Find fourth proportional to 979,845, 1,469,767.50 and 314,997
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.