Finding the Fourth Proportional to 658,386.10, 987,907.20 and 374,294.80
Calculator
Solution
The fourth proportional to 658,386.10, 987,907.20 and 374,294.80 is: 561,628.70
Step by Step Solution
- Step 1: Write the proportion equation
658,386.10 : 987,907.20 = 374,294.80 : x - Step 2: Convert to fraction form
658,386.10/987,907.20 = 374,294.80/x - Step 3: Cross multiply
658,386.10x = 987,907.20 × 374,294.80 - Step 4: Simplify right side
658,386.10x = 369,768,527,842.56 - Step 5: Solve for x
x = 369,768,527,842.56/658,386.10 - Step 6: Final answer
x = 561,628.70
Related Problems
Find fourth proportional to 329,193.05, 493,953.60 and 187,147.40
Half scale
Find fourth proportional to 1,316,772.20, 1,975,814.40 and 748,589.60
Double scale
Find fourth proportional to 658,387.10, 987,908.70 and 374,295.80
Similar ratio
Find fourth proportional to 987,579.15, 1,481,860.80 and 561,442.20
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.