Home / 420,132-921,900

Finding the Third Proportional to 420,132 and 921,900

Calculator

Solution

The third proportional to 420,132 and 921,900 is: 2,022,934.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,132 : 921,900 = 921,900 : x
  2. Step 2: Convert to fraction form
    420,132/921,900 = 921,900/x
  3. Step 3: Cross multiply
    420,132x = 921,900 × 921,900
  4. Step 4: Simplify right side
    420,132x = 849,899,610,000
  5. Step 5: Solve for x
    x = 849,899,610,000/420,132
  6. Step 6: Final answer
    x = 2,022,934.72

Related Problems

Find third proportional to 210,066 and 460,950
Half scale
Find third proportional to 840,264 and 1,843,800
Double scale
Find third proportional to 420,134 and 921,904
Similar ratio
Find third proportional to 630,198 and 1,382,850
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.