Finding the Fourth Proportional to 5,228,128.99, 7,213,638.81 and 3,163,093.22
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Solution
The fourth proportional to 5,228,128.99, 7,213,638.81 and 3,163,093.22 is: 4,364,355.21
Step by Step Solution
- Step 1: Write the proportion equation
5,228,128.99 : 7,213,638.81 = 3,163,093.22 : x - Step 2: Convert to fraction form
5,228,128.99/7,213,638.81 = 3,163,093.22/x - Step 3: Cross multiply
5,228,128.99x = 7,213,638.81 × 3,163,093.22 - Step 4: Simplify right side
5,228,128.99x = 22,817,411,975,371.67 - Step 5: Solve for x
x = 22,817,411,975,371.67/5,228,128.99 - Step 6: Final answer
x = 4,364,355.21
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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.