Home / 399,808-858,900

Finding the Third Proportional to 399,808 and 858,900

Calculator

Solution

The third proportional to 399,808 and 858,900 is: 1,845,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,808 : 858,900 = 858,900 : x
  2. Step 2: Convert to fraction form
    399,808/858,900 = 858,900/x
  3. Step 3: Cross multiply
    399,808x = 858,900 × 858,900
  4. Step 4: Simplify right side
    399,808x = 737,709,210,000
  5. Step 5: Solve for x
    x = 737,709,210,000/399,808
  6. Step 6: Final answer
    x = 1,845,158.70

Related Problems

Find third proportional to 199,904 and 429,450
Half scale
Find third proportional to 799,616 and 1,717,800
Double scale
Find third proportional to 399,810 and 858,904
Similar ratio
Find third proportional to 599,712 and 1,288,350
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.