Finding the Fourth Proportional to 482,979,328.20, 724,468,992.30 and 347,938,201.80
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Solution
The fourth proportional to 482,979,328.20, 724,468,992.30 and 347,938,201.80 is: 521,907,302.70
Step by Step Solution
- Step 1: Write the proportion equation
482,979,328.20 : 724,468,992.30 = 347,938,201.80 : x - Step 2: Convert to fraction form
482,979,328.20/724,468,992.30 = 347,938,201.80/x - Step 3: Cross multiply
482,979,328.20x = 724,468,992.30 × 347,938,201.80 - Step 4: Simplify right side
482,979,328.20x = 252,070,438,440,720,032 - Step 5: Solve for x
x = 252,070,438,440,720,032/482,979,328.20 - Step 6: Final answer
x = 521,907,302.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.