Finding the Fourth Proportional to 5,317,388.79, 7,976,579.21 and 4,120,654.08
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Solution
The fourth proportional to 5,317,388.79, 7,976,579.21 and 4,120,654.08 is: 6,181,365.51
Step by Step Solution
- Step 1: Write the proportion equation
5,317,388.79 : 7,976,579.21 = 4,120,654.08 : x - Step 2: Convert to fraction form
5,317,388.79/7,976,579.21 = 4,120,654.08/x - Step 3: Cross multiply
5,317,388.79x = 7,976,579.21 × 4,120,654.08 - Step 4: Simplify right side
5,317,388.79x = 32,868,723,645,526.41 - Step 5: Solve for x
x = 32,868,723,645,526.41/5,317,388.79 - Step 6: Final answer
x = 6,181,365.51
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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.