Finding the Fourth Proportional to 447,543,138.57, 617,527,544.09 and 249,299,699.91
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Solution
The fourth proportional to 447,543,138.57, 617,527,544.09 and 249,299,699.91 is: 343,987,915.71
Step by Step Solution
- Step 1: Write the proportion equation
447,543,138.57 : 617,527,544.09 = 249,299,699.91 : x - Step 2: Convert to fraction form
447,543,138.57/617,527,544.09 = 249,299,699.91/x - Step 3: Cross multiply
447,543,138.57x = 617,527,544.09 × 249,299,699.91 - Step 4: Simplify right side
447,543,138.57x = 153,949,431,424,234,080 - Step 5: Solve for x
x = 153,949,431,424,234,080/447,543,138.57 - Step 6: Final answer
x = 343,987,915.71
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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.