Finding the Fourth Proportional to 1,431,907.04, 1,976,039.07 and 787,368.80
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Solution
The fourth proportional to 1,431,907.04, 1,976,039.07 and 787,368.80 is: 1,086,572.99
Step by Step Solution
- Step 1: Write the proportion equation
1,431,907.04 : 1,976,039.07 = 787,368.80 : x - Step 2: Convert to fraction form
1,431,907.04/1,976,039.07 = 787,368.80/x - Step 3: Cross multiply
1,431,907.04x = 1,976,039.07 × 787,368.80 - Step 4: Simplify right side
1,431,907.04x = 1,555,871,511,299.02 - Step 5: Solve for x
x = 1,555,871,511,299.02/1,431,907.04 - Step 6: Final answer
x = 1,086,572.99
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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.