Home / 290,650-390,588

Finding the Third Proportional to 290,650 and 390,588

Calculator

Solution

The third proportional to 290,650 and 390,588 is: 524,888.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,650 : 390,588 = 390,588 : x
  2. Step 2: Convert to fraction form
    290,650/390,588 = 390,588/x
  3. Step 3: Cross multiply
    290,650x = 390,588 × 390,588
  4. Step 4: Simplify right side
    290,650x = 152,558,985,744
  5. Step 5: Solve for x
    x = 152,558,985,744/290,650
  6. Step 6: Final answer
    x = 524,888.99

Related Problems

Find third proportional to 145,325 and 195,294
Half scale
Find third proportional to 581,300 and 781,176
Double scale
Find third proportional to 290,652 and 390,591
Similar ratio
Find third proportional to 435,975 and 585,882
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.