Home / 398,520-863,432

Finding the Third Proportional to 398,520 and 863,432

Calculator

Solution

The third proportional to 398,520 and 863,432 is: 1,870,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,520 : 863,432 = 863,432 : x
  2. Step 2: Convert to fraction form
    398,520/863,432 = 863,432/x
  3. Step 3: Cross multiply
    398,520x = 863,432 × 863,432
  4. Step 4: Simplify right side
    398,520x = 745,514,818,624
  5. Step 5: Solve for x
    x = 745,514,818,624/398,520
  6. Step 6: Final answer
    x = 1,870,708.67

Related Problems

Find third proportional to 199,260 and 431,716
Half scale
Find third proportional to 797,040 and 1,726,864
Double scale
Find third proportional to 398,522 and 863,436
Similar ratio
Find third proportional to 597,780 and 1,295,148
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.