Finding the Fourth Proportional to 412,928,138.30, 619,392,207.45 and 238,349,769.80
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Solution
The fourth proportional to 412,928,138.30, 619,392,207.45 and 238,349,769.80 is: 357,524,654.70
Step by Step Solution
- Step 1: Write the proportion equation
412,928,138.30 : 619,392,207.45 = 238,349,769.80 : x - Step 2: Convert to fraction form
412,928,138.30/619,392,207.45 = 238,349,769.80/x - Step 3: Cross multiply
412,928,138.30x = 619,392,207.45 × 238,349,769.80 - Step 4: Simplify right side
412,928,138.30x = 147,631,990,061,621,376 - Step 5: Solve for x
x = 147,631,990,061,621,376/412,928,138.30 - Step 6: Final answer
x = 357,524,654.70
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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.