Finding the Fourth Proportional to 5,156,645.36, 7,115,754.08 and 2,981,328.64
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Solution
The fourth proportional to 5,156,645.36, 7,115,754.08 and 2,981,328.64 is: 4,113,992.71
Step by Step Solution
- Step 1: Write the proportion equation
5,156,645.36 : 7,115,754.08 = 2,981,328.64 : x - Step 2: Convert to fraction form
5,156,645.36/7,115,754.08 = 2,981,328.64/x - Step 3: Cross multiply
5,156,645.36x = 7,115,754.08 × 2,981,328.64 - Step 4: Simplify right side
5,156,645.36x = 21,214,401,423,564.79 - Step 5: Solve for x
x = 21,214,401,423,564.79/5,156,645.36 - Step 6: Final answer
x = 4,113,992.71
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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.