Finding the Fourth Proportional to 667,807,752.96, 921,436,696.08 and 385,545,302.55
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Solution
The fourth proportional to 667,807,752.96, 921,436,696.08 and 385,545,302.55 is: 531,972,844.27
Step by Step Solution
- Step 1: Write the proportion equation
667,807,752.96 : 921,436,696.08 = 385,545,302.55 : x - Step 2: Convert to fraction form
667,807,752.96/921,436,696.08 = 385,545,302.55/x - Step 3: Cross multiply
667,807,752.96x = 921,436,696.08 × 385,545,302.55 - Step 4: Simplify right side
667,807,752.96x = 355,255,589,770,836,032 - Step 5: Solve for x
x = 355,255,589,770,836,032/667,807,752.96 - Step 6: Final answer
x = 531,972,844.27
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1.5x scale
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.