Home / 316,080-688,968

Finding the Third Proportional to 316,080 and 688,968

Calculator

Solution

The third proportional to 316,080 and 688,968 is: 1,501,761.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,080 : 688,968 = 688,968 : x
  2. Step 2: Convert to fraction form
    316,080/688,968 = 688,968/x
  3. Step 3: Cross multiply
    316,080x = 688,968 × 688,968
  4. Step 4: Simplify right side
    316,080x = 474,676,905,024
  5. Step 5: Solve for x
    x = 474,676,905,024/316,080
  6. Step 6: Final answer
    x = 1,501,761.91

Related Problems

Find third proportional to 158,040 and 344,484
Half scale
Find third proportional to 632,160 and 1,377,936
Double scale
Find third proportional to 316,082 and 688,972
Similar ratio
Find third proportional to 474,120 and 1,033,452
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.