Home / 317,368-661,040

Finding the Third Proportional to 317,368 and 661,040

Calculator

Solution

The third proportional to 317,368 and 661,040 is: 1,376,868.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,368 : 661,040 = 661,040 : x
  2. Step 2: Convert to fraction form
    317,368/661,040 = 661,040/x
  3. Step 3: Cross multiply
    317,368x = 661,040 × 661,040
  4. Step 4: Simplify right side
    317,368x = 436,973,881,600
  5. Step 5: Solve for x
    x = 436,973,881,600/317,368
  6. Step 6: Final answer
    x = 1,376,868.12

Related Problems

Find third proportional to 158,684 and 330,520
Half scale
Find third proportional to 634,736 and 1,322,080
Double scale
Find third proportional to 317,370 and 661,044
Similar ratio
Find third proportional to 476,052 and 991,560
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.