Home / 311,903-679,776

Finding the Third Proportional to 311,903 and 679,776

Calculator

Solution

The third proportional to 311,903 and 679,776 is: 1,481,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,903 : 679,776 = 679,776 : x
  2. Step 2: Convert to fraction form
    311,903/679,776 = 679,776/x
  3. Step 3: Cross multiply
    311,903x = 679,776 × 679,776
  4. Step 4: Simplify right side
    311,903x = 462,095,410,176
  5. Step 5: Solve for x
    x = 462,095,410,176/311,903
  6. Step 6: Final answer
    x = 1,481,535.64

Related Problems

Find third proportional to 155,951.50 and 339,888
Half scale
Find third proportional to 623,806 and 1,359,552
Double scale
Find third proportional to 311,905 and 679,780
Similar ratio
Find third proportional to 467,854.50 and 1,019,664
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.