Home / 358,760-780,580

Finding the Third Proportional to 358,760 and 780,580

Calculator

Solution

The third proportional to 358,760 and 780,580 is: 1,698,364.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,760 : 780,580 = 780,580 : x
  2. Step 2: Convert to fraction form
    358,760/780,580 = 780,580/x
  3. Step 3: Cross multiply
    358,760x = 780,580 × 780,580
  4. Step 4: Simplify right side
    358,760x = 609,305,136,400
  5. Step 5: Solve for x
    x = 609,305,136,400/358,760
  6. Step 6: Final answer
    x = 1,698,364.19

Related Problems

Find third proportional to 179,380 and 390,290
Half scale
Find third proportional to 717,520 and 1,561,160
Double scale
Find third proportional to 358,762 and 780,584
Similar ratio
Find third proportional to 538,140 and 1,170,870
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.