Finding the Fourth Proportional to 685,229,289.62, 945,617,619.28 and 371,963,715.80
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Solution
The fourth proportional to 685,229,289.62, 945,617,619.28 and 371,963,715.80 is: 513,310,578.99
Step by Step Solution
- Step 1: Write the proportion equation
685,229,289.62 : 945,617,619.28 = 371,963,715.80 : x - Step 2: Convert to fraction form
685,229,289.62/945,617,619.28 = 371,963,715.80/x - Step 3: Cross multiply
685,229,289.62x = 945,617,619.28 × 371,963,715.80 - Step 4: Simplify right side
685,229,289.62x = 351,735,443,393,338,496 - Step 5: Solve for x
x = 351,735,443,393,338,496/685,229,289.62 - Step 6: Final answer
x = 513,310,578.99
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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.