Home / 390,432-852,468

Finding the Third Proportional to 390,432 and 852,468

Calculator

Solution

The third proportional to 390,432 and 852,468 is: 1,861,275.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,432 : 852,468 = 852,468 : x
  2. Step 2: Convert to fraction form
    390,432/852,468 = 852,468/x
  3. Step 3: Cross multiply
    390,432x = 852,468 × 852,468
  4. Step 4: Simplify right side
    390,432x = 726,701,691,024
  5. Step 5: Solve for x
    x = 726,701,691,024/390,432
  6. Step 6: Final answer
    x = 1,861,275.95

Related Problems

Find third proportional to 195,216 and 426,234
Half scale
Find third proportional to 780,864 and 1,704,936
Double scale
Find third proportional to 390,434 and 852,472
Similar ratio
Find third proportional to 585,648 and 1,278,702
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.