Finding the Fourth Proportional to 1,312,519.75, 1,811,278.47 and 708,907.75
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Solution
The fourth proportional to 1,312,519.75, 1,811,278.47 and 708,907.75 is: 978,293.35
Step by Step Solution
- Step 1: Write the proportion equation
1,312,519.75 : 1,811,278.47 = 708,907.75 : x - Step 2: Convert to fraction form
1,312,519.75/1,811,278.47 = 708,907.75/x - Step 3: Cross multiply
1,312,519.75x = 1,811,278.47 × 708,907.75 - Step 4: Simplify right side
1,312,519.75x = 1,284,029,344,791.14 - Step 5: Solve for x
x = 1,284,029,344,791.14/1,312,519.75 - Step 6: Final answer
x = 978,293.35
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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.