Home / 398,261-630,935

Finding the Third Proportional to 398,261 and 630,935

Calculator

Solution

The third proportional to 398,261 and 630,935 is: 999,542.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,261 : 630,935 = 630,935 : x
  2. Step 2: Convert to fraction form
    398,261/630,935 = 630,935/x
  3. Step 3: Cross multiply
    398,261x = 630,935 × 630,935
  4. Step 4: Simplify right side
    398,261x = 398,078,974,225
  5. Step 5: Solve for x
    x = 398,078,974,225/398,261
  6. Step 6: Final answer
    x = 999,542.95

Related Problems

Find third proportional to 199,130.50 and 315,467.50
Half scale
Find third proportional to 796,522 and 1,261,870
Double scale
Find third proportional to 398,263 and 630,938
Similar ratio
Find third proportional to 597,391.50 and 946,402.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.