Finding the Fourth Proportional to 2,785,165,317.20, 4,176,861,631.18 and 919,463,631.26
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Solution
The fourth proportional to 2,785,165,317.20, 4,176,861,631.18 and 919,463,631.26 is: 1,378,902,838.88
Step by Step Solution
- Step 1: Write the proportion equation
2,785,165,317.20 : 4,176,861,631.18 = 919,463,631.26 : x - Step 2: Convert to fraction form
2,785,165,317.20/4,176,861,631.18 = 919,463,631.26/x - Step 3: Cross multiply
2,785,165,317.20x = 4,176,861,631.18 × 919,463,631.26 - Step 4: Simplify right side
2,785,165,317.20x = 3,840,472,362,652,238,336 - Step 5: Solve for x
x = 3,840,472,362,652,238,336/2,785,165,317.20 - Step 6: Final answer
x = 1,378,902,838.88
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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.