Home / 420,006-921,666

Finding the Third Proportional to 420,006 and 921,666

Calculator

Solution

The third proportional to 420,006 and 921,666 is: 2,022,514.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,006 : 921,666 = 921,666 : x
  2. Step 2: Convert to fraction form
    420,006/921,666 = 921,666/x
  3. Step 3: Cross multiply
    420,006x = 921,666 × 921,666
  4. Step 4: Simplify right side
    420,006x = 849,468,215,556
  5. Step 5: Solve for x
    x = 849,468,215,556/420,006
  6. Step 6: Final answer
    x = 2,022,514.48

Related Problems

Find third proportional to 210,003 and 460,833
Half scale
Find third proportional to 840,012 and 1,843,332
Double scale
Find third proportional to 420,008 and 921,670
Similar ratio
Find third proportional to 630,009 and 1,382,499
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.