Home / 420,579-630,713.81

Finding the Third Proportional to 420,579 and 630,713.81

Calculator

Solution

The third proportional to 420,579 and 630,713.81 is: 945,838.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,579 : 630,713.81 = 630,713.81 : x
  2. Step 2: Convert to fraction form
    420,579/630,713.81 = 630,713.81/x
  3. Step 3: Cross multiply
    420,579x = 630,713.81 × 630,713.81
  4. Step 4: Simplify right side
    420,579x = 397,799,913,278.29
  5. Step 5: Solve for x
    x = 397,799,913,278.29/420,579
  6. Step 6: Final answer
    x = 945,838.74

Related Problems

Find third proportional to 210,289.50 and 315,356.91
Half scale
Find third proportional to 841,158 and 1,261,427.63
Double scale
Find third proportional to 420,581 and 630,717
Similar ratio
Find third proportional to 630,868.50 and 946,070.72
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.