Finding the Fourth Proportional to 5,317,382.79, 7,976,570.21 and 4,120,648.08
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Solution
The fourth proportional to 5,317,382.79, 7,976,570.21 and 4,120,648.08 is: 6,181,356.51
Step by Step Solution
- Step 1: Write the proportion equation
5,317,382.79 : 7,976,570.21 = 4,120,648.08 : x - Step 2: Convert to fraction form
5,317,382.79/7,976,570.21 = 4,120,648.08/x - Step 3: Cross multiply
5,317,382.79x = 7,976,570.21 × 4,120,648.08 - Step 4: Simplify right side
5,317,382.79x = 32,868,638,700,218.46 - Step 5: Solve for x
x = 32,868,638,700,218.46/5,317,382.79 - Step 6: Final answer
x = 6,181,356.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.