Home / 420,096-921,840

Finding the Third Proportional to 420,096 and 921,840

Calculator

Solution

The third proportional to 420,096 and 921,840 is: 2,022,844.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,096 : 921,840 = 921,840 : x
  2. Step 2: Convert to fraction form
    420,096/921,840 = 921,840/x
  3. Step 3: Cross multiply
    420,096x = 921,840 × 921,840
  4. Step 4: Simplify right side
    420,096x = 849,788,985,600
  5. Step 5: Solve for x
    x = 849,788,985,600/420,096
  6. Step 6: Final answer
    x = 2,022,844.74

Related Problems

Find third proportional to 210,048 and 460,920
Half scale
Find third proportional to 840,192 and 1,843,680
Double scale
Find third proportional to 420,098 and 921,844
Similar ratio
Find third proportional to 630,144 and 1,382,760
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.