Home / 434,136-672,120

Finding the Third Proportional to 434,136 and 672,120

Calculator

Solution

The third proportional to 434,136 and 672,120 is: 1,040,561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,136 : 672,120 = 672,120 : x
  2. Step 2: Convert to fraction form
    434,136/672,120 = 672,120/x
  3. Step 3: Cross multiply
    434,136x = 672,120 × 672,120
  4. Step 4: Simplify right side
    434,136x = 451,745,294,400
  5. Step 5: Solve for x
    x = 451,745,294,400/434,136
  6. Step 6: Final answer
    x = 1,040,561.70

Related Problems

Find third proportional to 217,068 and 336,060
Half scale
Find third proportional to 868,272 and 1,344,240
Double scale
Find third proportional to 434,138 and 672,123
Similar ratio
Find third proportional to 651,204 and 1,008,180
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.