Finding the Fourth Proportional to 393,677,726.24, 543,264,736.40 and 217,461,929.12
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Solution
The fourth proportional to 393,677,726.24, 543,264,736.40 and 217,461,929.12 is: 300,091,647.88
Step by Step Solution
- Step 1: Write the proportion equation
393,677,726.24 : 543,264,736.40 = 217,461,929.12 : x - Step 2: Convert to fraction form
393,677,726.24/543,264,736.40 = 217,461,929.12/x - Step 3: Cross multiply
393,677,726.24x = 543,264,736.40 × 217,461,929.12 - Step 4: Simplify right side
393,677,726.24x = 118,139,397,600,412,288 - Step 5: Solve for x
x = 118,139,397,600,412,288/393,677,726.24 - Step 6: Final answer
x = 300,091,647.88
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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.