Finding the Fourth Proportional to 1,549,578.62, 2,138,473.32 and 861,264.20
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Solution
The fourth proportional to 1,549,578.62, 2,138,473.32 and 861,264.20 is: 1,188,575.07
Step by Step Solution
- Step 1: Write the proportion equation
1,549,578.62 : 2,138,473.32 = 861,264.20 : x - Step 2: Convert to fraction form
1,549,578.62/2,138,473.32 = 861,264.20/x - Step 3: Cross multiply
1,549,578.62x = 2,138,473.32 × 861,264.20 - Step 4: Simplify right side
1,549,578.62x = 1,841,790,513,171.14 - Step 5: Solve for x
x = 1,841,790,513,171.14/1,549,578.62 - Step 6: Final answer
x = 1,188,575.07
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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.