Home / 421,915.50-670,234.50

Finding the Third Proportional to 421,915.50 and 670,234.50

Calculator

Solution

The third proportional to 421,915.50 and 670,234.50 is: 1,064,702.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,915.50 : 670,234.50 = 670,234.50 : x
  2. Step 2: Convert to fraction form
    421,915.50/670,234.50 = 670,234.50/x
  3. Step 3: Cross multiply
    421,915.50x = 670,234.50 × 670,234.50
  4. Step 4: Simplify right side
    421,915.50x = 449,214,284,990.25
  5. Step 5: Solve for x
    x = 449,214,284,990.25/421,915.50
  6. Step 6: Final answer
    x = 1,064,702.02

Related Problems

Find third proportional to 210,957.75 and 335,117.25
Half scale
Find third proportional to 843,831 and 1,340,469
Double scale
Find third proportional to 421,918 and 670,238
Similar ratio
Find third proportional to 632,873.25 and 1,005,351.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.