Home / 321,970-699,292

Finding the Third Proportional to 321,970 and 699,292

Calculator

Solution

The third proportional to 321,970 and 699,292 is: 1,518,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,970 : 699,292 = 699,292 : x
  2. Step 2: Convert to fraction form
    321,970/699,292 = 699,292/x
  3. Step 3: Cross multiply
    321,970x = 699,292 × 699,292
  4. Step 4: Simplify right side
    321,970x = 489,009,301,264
  5. Step 5: Solve for x
    x = 489,009,301,264/321,970
  6. Step 6: Final answer
    x = 1,518,803.93

Related Problems

Find third proportional to 160,985 and 349,646
Half scale
Find third proportional to 643,940 and 1,398,584
Double scale
Find third proportional to 321,972 and 699,296
Similar ratio
Find third proportional to 482,955 and 1,048,938
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.