Home / 475,776-645,840

Finding the Third Proportional to 475,776 and 645,840

Calculator

Solution

The third proportional to 475,776 and 645,840 is: 876,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,776 : 645,840 = 645,840 : x
  2. Step 2: Convert to fraction form
    475,776/645,840 = 645,840/x
  3. Step 3: Cross multiply
    475,776x = 645,840 × 645,840
  4. Step 4: Simplify right side
    475,776x = 417,109,305,600
  5. Step 5: Solve for x
    x = 417,109,305,600/475,776
  6. Step 6: Final answer
    x = 876,692.62

Related Problems

Find third proportional to 237,888 and 322,920
Half scale
Find third proportional to 951,552 and 1,291,680
Double scale
Find third proportional to 475,778 and 645,843
Similar ratio
Find third proportional to 713,664 and 968,760
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.