Finding the Fourth Proportional to 388,843,912, 536,351,757.12 and 249,393,793.60
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Solution
The fourth proportional to 388,843,912, 536,351,757.12 and 249,393,793.60 is: 344,001,269.62
Step by Step Solution
- Step 1: Write the proportion equation
388,843,912 : 536,351,757.12 = 249,393,793.60 : x - Step 2: Convert to fraction form
388,843,912/536,351,757.12 = 249,393,793.60/x - Step 3: Cross multiply
388,843,912x = 536,351,757.12 × 249,393,793.60 - Step 4: Simplify right side
388,843,912x = 133,762,799,412,182,608 - Step 5: Solve for x
x = 133,762,799,412,182,608/388,843,912 - Step 6: Final answer
x = 344,001,269.62
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.