Home / 405,972-872,424

Finding the Third Proportional to 405,972 and 872,424

Calculator

Solution

The third proportional to 405,972 and 872,424 is: 1,874,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,972 : 872,424 = 872,424 : x
  2. Step 2: Convert to fraction form
    405,972/872,424 = 872,424/x
  3. Step 3: Cross multiply
    405,972x = 872,424 × 872,424
  4. Step 4: Simplify right side
    405,972x = 761,123,635,776
  5. Step 5: Solve for x
    x = 761,123,635,776/405,972
  6. Step 6: Final answer
    x = 1,874,818.06

Related Problems

Find third proportional to 202,986 and 436,212
Half scale
Find third proportional to 811,944 and 1,744,848
Double scale
Find third proportional to 405,974 and 872,428
Similar ratio
Find third proportional to 608,958 and 1,308,636
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.