Home / 423,945-909,315

Finding the Third Proportional to 423,945 and 909,315

Calculator

Solution

The third proportional to 423,945 and 909,315 is: 1,950,379.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,945 : 909,315 = 909,315 : x
  2. Step 2: Convert to fraction form
    423,945/909,315 = 909,315/x
  3. Step 3: Cross multiply
    423,945x = 909,315 × 909,315
  4. Step 4: Simplify right side
    423,945x = 826,853,769,225
  5. Step 5: Solve for x
    x = 826,853,769,225/423,945
  6. Step 6: Final answer
    x = 1,950,379.81

Related Problems

Find third proportional to 211,972.50 and 454,657.50
Half scale
Find third proportional to 847,890 and 1,818,630
Double scale
Find third proportional to 423,947 and 909,319
Similar ratio
Find third proportional to 635,917.50 and 1,363,972.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.