Home / 420,000-921,648

Finding the Third Proportional to 420,000 and 921,648

Calculator

Solution

The third proportional to 420,000 and 921,648 is: 2,022,464.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,000 : 921,648 = 921,648 : x
  2. Step 2: Convert to fraction form
    420,000/921,648 = 921,648/x
  3. Step 3: Cross multiply
    420,000x = 921,648 × 921,648
  4. Step 4: Simplify right side
    420,000x = 849,435,035,904
  5. Step 5: Solve for x
    x = 849,435,035,904/420,000
  6. Step 6: Final answer
    x = 2,022,464.37

Related Problems

Find third proportional to 210,000 and 460,824
Half scale
Find third proportional to 840,000 and 1,843,296
Double scale
Find third proportional to 420,002 and 921,652
Similar ratio
Find third proportional to 630,000 and 1,382,472
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.