Home / 434,889-612,420

Finding the Third Proportional to 434,889 and 612,420

Calculator

Solution

The third proportional to 434,889 and 612,420 is: 862,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,889 : 612,420 = 612,420 : x
  2. Step 2: Convert to fraction form
    434,889/612,420 = 612,420/x
  3. Step 3: Cross multiply
    434,889x = 612,420 × 612,420
  4. Step 4: Simplify right side
    434,889x = 375,058,256,400
  5. Step 5: Solve for x
    x = 375,058,256,400/434,889
  6. Step 6: Final answer
    x = 862,422.95

Related Problems

Find third proportional to 217,444.50 and 306,210
Half scale
Find third proportional to 869,778 and 1,224,840
Double scale
Find third proportional to 434,891 and 612,423
Similar ratio
Find third proportional to 652,333.50 and 918,630
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.