Home / 428,368-890,432

Finding the Third Proportional to 428,368 and 890,432

Calculator

Solution

The third proportional to 428,368 and 890,432 is: 1,850,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,368 : 890,432 = 890,432 : x
  2. Step 2: Convert to fraction form
    428,368/890,432 = 890,432/x
  3. Step 3: Cross multiply
    428,368x = 890,432 × 890,432
  4. Step 4: Simplify right side
    428,368x = 792,869,146,624
  5. Step 5: Solve for x
    x = 792,869,146,624/428,368
  6. Step 6: Final answer
    x = 1,850,906.57

Related Problems

Find third proportional to 214,184 and 445,216
Half scale
Find third proportional to 856,736 and 1,780,864
Double scale
Find third proportional to 428,370 and 890,436
Similar ratio
Find third proportional to 642,552 and 1,335,648
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.