Finding the Fourth Proportional to 2,138,115.20, 3,207,145.68 and 518,897.36
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Solution
The fourth proportional to 2,138,115.20, 3,207,145.68 and 518,897.36 is: 778,339.46
Step by Step Solution
- Step 1: Write the proportion equation
2,138,115.20 : 3,207,145.68 = 518,897.36 : x - Step 2: Convert to fraction form
2,138,115.20/3,207,145.68 = 518,897.36/x - Step 3: Cross multiply
2,138,115.20x = 3,207,145.68 × 518,897.36 - Step 4: Simplify right side
2,138,115.20x = 1,664,179,425,784.08 - Step 5: Solve for x
x = 1,664,179,425,784.08/2,138,115.20 - Step 6: Final answer
x = 778,339.46
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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.