Home / 390,487.50-589,890

Finding the Third Proportional to 390,487.50 and 589,890

Calculator

Solution

The third proportional to 390,487.50 and 589,890 is: 891,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,487.50 : 589,890 = 589,890 : x
  2. Step 2: Convert to fraction form
    390,487.50/589,890 = 589,890/x
  3. Step 3: Cross multiply
    390,487.50x = 589,890 × 589,890
  4. Step 4: Simplify right side
    390,487.50x = 347,970,212,100
  5. Step 5: Solve for x
    x = 347,970,212,100/390,487.50
  6. Step 6: Final answer
    x = 891,117.42

Related Problems

Find third proportional to 195,243.75 and 294,945
Half scale
Find third proportional to 780,975 and 1,179,780
Double scale
Find third proportional to 390,490 and 589,893
Similar ratio
Find third proportional to 585,731.25 and 884,835
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.