Home / 415,298-909,220

Finding the Third Proportional to 415,298 and 909,220

Calculator

Solution

The third proportional to 415,298 and 909,220 is: 1,990,573.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,298 : 909,220 = 909,220 : x
  2. Step 2: Convert to fraction form
    415,298/909,220 = 909,220/x
  3. Step 3: Cross multiply
    415,298x = 909,220 × 909,220
  4. Step 4: Simplify right side
    415,298x = 826,681,008,400
  5. Step 5: Solve for x
    x = 826,681,008,400/415,298
  6. Step 6: Final answer
    x = 1,990,573.05

Related Problems

Find third proportional to 207,649 and 454,610
Half scale
Find third proportional to 830,596 and 1,818,440
Double scale
Find third proportional to 415,300 and 909,224
Similar ratio
Find third proportional to 622,947 and 1,363,830
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.