Home / 287,818.31-431,761.64

Finding the Third Proportional to 287,818.31 and 431,761.64

Calculator

Solution

The third proportional to 287,818.31 and 431,761.64 is: 647,693.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,818.31 : 431,761.64 = 431,761.64 : x
  2. Step 2: Convert to fraction form
    287,818.31/431,761.64 = 431,761.64/x
  3. Step 3: Cross multiply
    287,818.31x = 431,761.64 × 431,761.64
  4. Step 4: Simplify right side
    287,818.31x = 186,418,114,315.19
  5. Step 5: Solve for x
    x = 186,418,114,315.19/287,818.31
  6. Step 6: Final answer
    x = 647,693.72

Related Problems

Find third proportional to 143,909.16 and 215,880.82
Half scale
Find third proportional to 575,636.63 and 863,523.28
Double scale
Find third proportional to 287,820 and 431,765
Similar ratio
Find third proportional to 431,727.47 and 647,642.46
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.