Home / 287,712-431,572

Finding the Third Proportional to 287,712 and 431,572

Calculator

Solution

The third proportional to 287,712 and 431,572 is: 647,364.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712 : 431,572 = 431,572 : x
  2. Step 2: Convert to fraction form
    287,712/431,572 = 431,572/x
  3. Step 3: Cross multiply
    287,712x = 431,572 × 431,572
  4. Step 4: Simplify right side
    287,712x = 186,254,391,184
  5. Step 5: Solve for x
    x = 186,254,391,184/287,712
  6. Step 6: Final answer
    x = 647,364.00

Related Problems

Find third proportional to 143,856 and 215,786
Half scale
Find third proportional to 575,424 and 863,144
Double scale
Find third proportional to 287,714 and 431,575
Similar ratio
Find third proportional to 431,568 and 647,358
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.