Home / 420,457.50-635,715

Finding the Third Proportional to 420,457.50 and 635,715

Calculator

Solution

The third proportional to 420,457.50 and 635,715 is: 961,175.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,457.50 : 635,715 = 635,715 : x
  2. Step 2: Convert to fraction form
    420,457.50/635,715 = 635,715/x
  3. Step 3: Cross multiply
    420,457.50x = 635,715 × 635,715
  4. Step 4: Simplify right side
    420,457.50x = 404,133,561,225
  5. Step 5: Solve for x
    x = 404,133,561,225/420,457.50
  6. Step 6: Final answer
    x = 961,175.77

Related Problems

Find third proportional to 210,228.75 and 317,857.50
Half scale
Find third proportional to 840,915 and 1,271,430
Double scale
Find third proportional to 420,460 and 635,718
Similar ratio
Find third proportional to 630,686.25 and 953,572.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.