Finding the Fourth Proportional to 561,039.76, 774,237.72 and 306,390.96
Calculator
Solution
The fourth proportional to 561,039.76, 774,237.72 and 306,390.96 is: 422,821.08
Step by Step Solution
- Step 1: Write the proportion equation
561,039.76 : 774,237.72 = 306,390.96 : x - Step 2: Convert to fraction form
561,039.76/774,237.72 = 306,390.96/x - Step 3: Cross multiply
561,039.76x = 774,237.72 × 306,390.96 - Step 4: Simplify right side
561,039.76x = 237,219,438,299.01 - Step 5: Solve for x
x = 237,219,438,299.01/561,039.76 - Step 6: Final answer
x = 422,821.08
Related Problems
Find fourth proportional to 280,519.88, 387,118.86 and 153,195.48
Half scale
Find fourth proportional to 1,122,079.52, 1,548,475.44 and 612,781.92
Double scale
Find fourth proportional to 561,040.76, 774,239.10 and 306,391.96
Similar ratio
Find fourth proportional to 841,559.64, 1,161,356.58 and 459,586.44
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.