Home / 342,070-728,428

Finding the Third Proportional to 342,070 and 728,428

Calculator

Solution

The third proportional to 342,070 and 728,428 is: 1,551,165.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,070 : 728,428 = 728,428 : x
  2. Step 2: Convert to fraction form
    342,070/728,428 = 728,428/x
  3. Step 3: Cross multiply
    342,070x = 728,428 × 728,428
  4. Step 4: Simplify right side
    342,070x = 530,607,351,184
  5. Step 5: Solve for x
    x = 530,607,351,184/342,070
  6. Step 6: Final answer
    x = 1,551,165.99

Related Problems

Find third proportional to 171,035 and 364,214
Half scale
Find third proportional to 684,140 and 1,456,856
Double scale
Find third proportional to 342,072 and 728,432
Similar ratio
Find third proportional to 513,105 and 1,092,642
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.