Finding the Fourth Proportional to 782,988.08, 1,080,472.40 and 460,635.90
Calculator
Solution
The fourth proportional to 782,988.08, 1,080,472.40 and 460,635.90 is: 635,647.45
Step by Step Solution
- Step 1: Write the proportion equation
782,988.08 : 1,080,472.40 = 460,635.90 : x - Step 2: Convert to fraction form
782,988.08/1,080,472.40 = 460,635.90/x - Step 3: Cross multiply
782,988.08x = 1,080,472.40 × 460,635.90 - Step 4: Simplify right side
782,988.08x = 497,704,376,399.16 - Step 5: Solve for x
x = 497,704,376,399.16/782,988.08 - Step 6: Final answer
x = 635,647.45
Related Problems
Find fourth proportional to 391,494.04, 540,236.20 and 230,317.95
Half scale
Find fourth proportional to 1,565,976.16, 2,160,944.80 and 921,271.80
Double scale
Find fourth proportional to 782,989.08, 1,080,473.78 and 460,636.90
Similar ratio
Find fourth proportional to 1,174,482.12, 1,620,708.60 and 690,953.85
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.