Home / 661,374-989,487

Finding the Third Proportional to 661,374 and 989,487

Calculator

Solution

The third proportional to 661,374 and 989,487 is: 1,480,379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,374 : 989,487 = 989,487 : x
  2. Step 2: Convert to fraction form
    661,374/989,487 = 989,487/x
  3. Step 3: Cross multiply
    661,374x = 989,487 × 989,487
  4. Step 4: Simplify right side
    661,374x = 979,084,523,169
  5. Step 5: Solve for x
    x = 979,084,523,169/661,374
  6. Step 6: Final answer
    x = 1,480,379.52

Related Problems

Find third proportional to 330,687 and 494,743.50
Half scale
Find third proportional to 1,322,748 and 1,978,974
Double scale
Find third proportional to 661,376 and 989,490
Similar ratio
Find third proportional to 992,061 and 1,484,230.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.