Finding the Fourth Proportional to 408,090,648.30, 612,135,972.45 and 392,218,277.10
Calculator
Solution
The fourth proportional to 408,090,648.30, 612,135,972.45 and 392,218,277.10 is: 588,327,415.65
Step by Step Solution
- Step 1: Write the proportion equation
408,090,648.30 : 612,135,972.45 = 392,218,277.10 : x - Step 2: Convert to fraction form
408,090,648.30/612,135,972.45 = 392,218,277.10/x - Step 3: Cross multiply
408,090,648.30x = 612,135,972.45 × 392,218,277.10 - Step 4: Simplify right side
408,090,648.30x = 240,090,916,465,272,096 - Step 5: Solve for x
x = 240,090,916,465,272,096/408,090,648.30 - Step 6: Final answer
x = 588,327,415.65
Related Problems
Find fourth proportional to 204,045,324.15, 306,067,986.23 and 196,109,138.55
Half scale
Find fourth proportional to 816,181,296.60, 1,224,271,944.90 and 784,436,554.20
Double scale
Find fourth proportional to 408,090,649.30, 612,135,973.95 and 392,218,278.10
Similar ratio
Find fourth proportional to 612,135,972.45, 918,203,958.68 and 588,327,415.65
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.