Home / 387,342-528,070

Finding the Third Proportional to 387,342 and 528,070

Calculator

Solution

The third proportional to 387,342 and 528,070 is: 719,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,342 : 528,070 = 528,070 : x
  2. Step 2: Convert to fraction form
    387,342/528,070 = 528,070/x
  3. Step 3: Cross multiply
    387,342x = 528,070 × 528,070
  4. Step 4: Simplify right side
    387,342x = 278,857,924,900
  5. Step 5: Solve for x
    x = 278,857,924,900/387,342
  6. Step 6: Final answer
    x = 719,926.90

Related Problems

Find third proportional to 193,671 and 264,035
Half scale
Find third proportional to 774,684 and 1,056,140
Double scale
Find third proportional to 387,344 and 528,073
Similar ratio
Find third proportional to 581,013 and 792,105
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.