Home / 357,045-489,591

Finding the Third Proportional to 357,045 and 489,591

Calculator

Solution

The third proportional to 357,045 and 489,591 is: 671,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,045 : 489,591 = 489,591 : x
  2. Step 2: Convert to fraction form
    357,045/489,591 = 489,591/x
  3. Step 3: Cross multiply
    357,045x = 489,591 × 489,591
  4. Step 4: Simplify right side
    357,045x = 239,699,347,281
  5. Step 5: Solve for x
    x = 239,699,347,281/357,045
  6. Step 6: Final answer
    x = 671,342.12

Related Problems

Find third proportional to 178,522.50 and 244,795.50
Half scale
Find third proportional to 714,090 and 979,182
Double scale
Find third proportional to 357,047 and 489,594
Similar ratio
Find third proportional to 535,567.50 and 734,386.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.