Finding the Fourth Proportional to 5,431,124.42, 7,485,948.81 and 5,287,365.75
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Solution
The fourth proportional to 5,431,124.42, 7,485,948.81 and 5,287,365.75 is: 7,287,800.15
Step by Step Solution
- Step 1: Write the proportion equation
5,431,124.42 : 7,485,948.81 = 5,287,365.75 : x - Step 2: Convert to fraction form
5,431,124.42/7,485,948.81 = 5,287,365.75/x - Step 3: Cross multiply
5,431,124.42x = 7,485,948.81 × 5,287,365.75 - Step 4: Simplify right side
5,431,124.42x = 39,580,949,344,247.26 - Step 5: Solve for x
x = 39,580,949,344,247.26/5,431,124.42 - Step 6: Final answer
x = 7,287,800.15
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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.