Finding the Fourth Proportional to 491,457,815.24, 678,207,754.48 and 268,439,639.08
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Solution
The fourth proportional to 491,457,815.24, 678,207,754.48 and 268,439,639.08 is: 370,444,500.40
Step by Step Solution
- Step 1: Write the proportion equation
491,457,815.24 : 678,207,754.48 = 268,439,639.08 : x - Step 2: Convert to fraction form
491,457,815.24/678,207,754.48 = 268,439,639.08/x - Step 3: Cross multiply
491,457,815.24x = 678,207,754.48 × 268,439,639.08 - Step 4: Simplify right side
491,457,815.24x = 182,057,844,833,868,448 - Step 5: Solve for x
x = 182,057,844,833,868,448/491,457,815.24 - Step 6: Final answer
x = 370,444,500.40
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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.