Home / 315,071-478,431

Finding the Third Proportional to 315,071 and 478,431

Calculator

Solution

The third proportional to 315,071 and 478,431 is: 726,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,071 : 478,431 = 478,431 : x
  2. Step 2: Convert to fraction form
    315,071/478,431 = 478,431/x
  3. Step 3: Cross multiply
    315,071x = 478,431 × 478,431
  4. Step 4: Simplify right side
    315,071x = 228,896,221,761
  5. Step 5: Solve for x
    x = 228,896,221,761/315,071
  6. Step 6: Final answer
    x = 726,490.92

Related Problems

Find third proportional to 157,535.50 and 239,215.50
Half scale
Find third proportional to 630,142 and 956,862
Double scale
Find third proportional to 315,073 and 478,434
Similar ratio
Find third proportional to 472,606.50 and 717,646.50
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.