Home / 445,036-688,670

Finding the Third Proportional to 445,036 and 688,670

Calculator

Solution

The third proportional to 445,036 and 688,670 is: 1,065,680.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,036 : 688,670 = 688,670 : x
  2. Step 2: Convert to fraction form
    445,036/688,670 = 688,670/x
  3. Step 3: Cross multiply
    445,036x = 688,670 × 688,670
  4. Step 4: Simplify right side
    445,036x = 474,266,368,900
  5. Step 5: Solve for x
    x = 474,266,368,900/445,036
  6. Step 6: Final answer
    x = 1,065,680.91

Related Problems

Find third proportional to 222,518 and 344,335
Half scale
Find third proportional to 890,072 and 1,377,340
Double scale
Find third proportional to 445,038 and 688,673
Similar ratio
Find third proportional to 667,554 and 1,033,005
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.