Finding the Fourth Proportional to 393,678,563.20, 590,517,844.80 and 102,545,123.20
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Solution
The fourth proportional to 393,678,563.20, 590,517,844.80 and 102,545,123.20 is: 153,817,684.80
Step by Step Solution
- Step 1: Write the proportion equation
393,678,563.20 : 590,517,844.80 = 102,545,123.20 : x - Step 2: Convert to fraction form
393,678,563.20/590,517,844.80 = 102,545,123.20/x - Step 3: Cross multiply
393,678,563.20x = 590,517,844.80 × 102,545,123.20 - Step 4: Simplify right side
393,678,563.20x = 60,554,725,146,814,480 - Step 5: Solve for x
x = 60,554,725,146,814,480/393,678,563.20 - Step 6: Final answer
x = 153,817,684.80
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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.