Home / 678,426-921,375

Finding the Third Proportional to 678,426 and 921,375

Calculator

Solution

The third proportional to 678,426 and 921,375 is: 1,251,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,426 : 921,375 = 921,375 : x
  2. Step 2: Convert to fraction form
    678,426/921,375 = 921,375/x
  3. Step 3: Cross multiply
    678,426x = 921,375 × 921,375
  4. Step 4: Simplify right side
    678,426x = 848,931,890,625
  5. Step 5: Solve for x
    x = 848,931,890,625/678,426
  6. Step 6: Final answer
    x = 1,251,325.70

Related Problems

Find third proportional to 339,213 and 460,687.50
Half scale
Find third proportional to 1,356,852 and 1,842,750
Double scale
Find third proportional to 678,428 and 921,378
Similar ratio
Find third proportional to 1,017,639 and 1,382,062.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.