Home / 478,722-708,840

Finding the Third Proportional to 478,722 and 708,840

Calculator

Solution

The third proportional to 478,722 and 708,840 is: 1,049,573.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,722 : 708,840 = 708,840 : x
  2. Step 2: Convert to fraction form
    478,722/708,840 = 708,840/x
  3. Step 3: Cross multiply
    478,722x = 708,840 × 708,840
  4. Step 4: Simplify right side
    478,722x = 502,454,145,600
  5. Step 5: Solve for x
    x = 502,454,145,600/478,722
  6. Step 6: Final answer
    x = 1,049,573.96

Related Problems

Find third proportional to 239,361 and 354,420
Half scale
Find third proportional to 957,444 and 1,417,680
Double scale
Find third proportional to 478,724 and 708,843
Similar ratio
Find third proportional to 718,083 and 1,063,260
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.