Finding the Fourth Proportional to 491,457,812.23, 678,207,750.36 and 268,439,636.08
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Solution
The fourth proportional to 491,457,812.23, 678,207,750.36 and 268,439,636.08 is: 370,444,496.27
Step by Step Solution
- Step 1: Write the proportion equation
491,457,812.23 : 678,207,750.36 = 268,439,636.08 : x - Step 2: Convert to fraction form
491,457,812.23/678,207,750.36 = 268,439,636.08/x - Step 3: Cross multiply
491,457,812.23x = 678,207,750.36 × 268,439,636.08 - Step 4: Simplify right side
491,457,812.23x = 182,057,841,688,540,640 - Step 5: Solve for x
x = 182,057,841,688,540,640/491,457,812.23 - Step 6: Final answer
x = 370,444,496.27
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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.