Home / 405,152-869,172

Finding the Third Proportional to 405,152 and 869,172

Calculator

Solution

The third proportional to 405,152 and 869,172 is: 1,864,633.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,152 : 869,172 = 869,172 : x
  2. Step 2: Convert to fraction form
    405,152/869,172 = 869,172/x
  3. Step 3: Cross multiply
    405,152x = 869,172 × 869,172
  4. Step 4: Simplify right side
    405,152x = 755,459,965,584
  5. Step 5: Solve for x
    x = 755,459,965,584/405,152
  6. Step 6: Final answer
    x = 1,864,633.44

Related Problems

Find third proportional to 202,576 and 434,586
Half scale
Find third proportional to 810,304 and 1,738,344
Double scale
Find third proportional to 405,154 and 869,176
Similar ratio
Find third proportional to 607,728 and 1,303,758
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.