Finding the Fourth Proportional to 986,771.53, 1,361,780 and 557,128.09
Calculator
Solution
The fourth proportional to 986,771.53, 1,361,780 and 557,128.09 is: 768,856.69
Step by Step Solution
- Step 1: Write the proportion equation
986,771.53 : 1,361,780 = 557,128.09 : x - Step 2: Convert to fraction form
986,771.53/1,361,780 = 557,128.09/x - Step 3: Cross multiply
986,771.53x = 1,361,780 × 557,128.09 - Step 4: Simplify right side
986,771.53x = 758,685,890,400.20 - Step 5: Solve for x
x = 758,685,890,400.20/986,771.53 - Step 6: Final answer
x = 768,856.69
Related Problems
Find fourth proportional to 493,385.77, 680,890 and 278,564.05
Half scale
Find fourth proportional to 1,973,543.06, 2,723,560 and 1,114,256.18
Double scale
Find fourth proportional to 986,772.53, 1,361,781.38 and 557,129.09
Similar ratio
Find fourth proportional to 1,480,157.30, 2,042,670 and 835,692.14
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.