Finding the Fourth Proportional to 1,399,336.74, 1,931,062.41 and 779,135.94
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Solution
The fourth proportional to 1,399,336.74, 1,931,062.41 and 779,135.94 is: 1,075,195.19
Step by Step Solution
- Step 1: Write the proportion equation
1,399,336.74 : 1,931,062.41 = 779,135.94 : x - Step 2: Convert to fraction form
1,399,336.74/1,931,062.41 = 779,135.94/x - Step 3: Cross multiply
1,399,336.74x = 1,931,062.41 × 779,135.94 - Step 4: Simplify right side
1,399,336.74x = 1,504,560,126,014.02 - Step 5: Solve for x
x = 1,504,560,126,014.02/1,399,336.74 - Step 6: Final answer
x = 1,075,195.19
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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.