Finding the Fourth Proportional to 1,292,075.40, 1,783,046.28 and 719,115.48
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Solution
The fourth proportional to 1,292,075.40, 1,783,046.28 and 719,115.48 is: 992,369.47
Step by Step Solution
- Step 1: Write the proportion equation
1,292,075.40 : 1,783,046.28 = 719,115.48 : x - Step 2: Convert to fraction form
1,292,075.40/1,783,046.28 = 719,115.48/x - Step 3: Cross multiply
1,292,075.40x = 1,783,046.28 × 719,115.48 - Step 4: Simplify right side
1,292,075.40x = 1,282,216,181,504.41 - Step 5: Solve for x
x = 1,282,216,181,504.41/1,292,075.40 - Step 6: Final answer
x = 992,369.47
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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.