Home / 478,388-987,872

Finding the Third Proportional to 478,388 and 987,872

Calculator

Solution

The third proportional to 478,388 and 987,872 is: 2,039,957.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,388 : 987,872 = 987,872 : x
  2. Step 2: Convert to fraction form
    478,388/987,872 = 987,872/x
  3. Step 3: Cross multiply
    478,388x = 987,872 × 987,872
  4. Step 4: Simplify right side
    478,388x = 975,891,088,384
  5. Step 5: Solve for x
    x = 975,891,088,384/478,388
  6. Step 6: Final answer
    x = 2,039,957.29

Related Problems

Find third proportional to 239,194 and 493,936
Half scale
Find third proportional to 956,776 and 1,975,744
Double scale
Find third proportional to 478,390 and 987,876
Similar ratio
Find third proportional to 717,582 and 1,481,808
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.