Home / 517,890-787,643

Finding the Third Proportional to 517,890 and 787,643

Calculator

Solution

The third proportional to 517,890 and 787,643 is: 1,197,902.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,890 : 787,643 = 787,643 : x
  2. Step 2: Convert to fraction form
    517,890/787,643 = 787,643/x
  3. Step 3: Cross multiply
    517,890x = 787,643 × 787,643
  4. Step 4: Simplify right side
    517,890x = 620,381,495,449
  5. Step 5: Solve for x
    x = 620,381,495,449/517,890
  6. Step 6: Final answer
    x = 1,197,902.06

Related Problems

Find third proportional to 258,945 and 393,821.50
Half scale
Find third proportional to 1,035,780 and 1,575,286
Double scale
Find third proportional to 517,892 and 787,646
Similar ratio
Find third proportional to 776,835 and 1,181,464.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.