Finding the Fourth Proportional to 619,987.86, 855,481.37 and 365,304.42
Calculator
Solution
The fourth proportional to 619,987.86, 855,481.37 and 365,304.42 is: 504,060.07
Step by Step Solution
- Step 1: Write the proportion equation
619,987.86 : 855,481.37 = 365,304.42 : x - Step 2: Convert to fraction form
619,987.86/855,481.37 = 365,304.42/x - Step 3: Cross multiply
619,987.86x = 855,481.37 × 365,304.42 - Step 4: Simplify right side
619,987.86x = 312,511,123,862.13 - Step 5: Solve for x
x = 312,511,123,862.13/619,987.86 - Step 6: Final answer
x = 504,060.07
Related Problems
Find fourth proportional to 309,993.93, 427,740.68 and 182,652.21
Half scale
Find fourth proportional to 1,239,975.72, 1,710,962.73 and 730,608.84
Double scale
Find fourth proportional to 619,988.86, 855,482.74 and 365,305.42
Similar ratio
Find fourth proportional to 929,981.79, 1,283,222.05 and 547,956.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.