Home / 385,798-520,423

Finding the Third Proportional to 385,798 and 520,423

Calculator

Solution

The third proportional to 385,798 and 520,423 is: 702,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,798 : 520,423 = 520,423 : x
  2. Step 2: Convert to fraction form
    385,798/520,423 = 520,423/x
  3. Step 3: Cross multiply
    385,798x = 520,423 × 520,423
  4. Step 4: Simplify right side
    385,798x = 270,840,098,929
  5. Step 5: Solve for x
    x = 270,840,098,929/385,798
  6. Step 6: Final answer
    x = 702,025.67

Related Problems

Find third proportional to 192,899 and 260,211.50
Half scale
Find third proportional to 771,596 and 1,040,846
Double scale
Find third proportional to 385,800 and 520,426
Similar ratio
Find third proportional to 578,697 and 780,634.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.