Finding the Fourth Proportional to 1,763,147,861.44, 2,644,721,398.50 and 642,755,515.48
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Solution
The fourth proportional to 1,763,147,861.44, 2,644,721,398.50 and 642,755,515.48 is: 964,133,129.71
Step by Step Solution
- Step 1: Write the proportion equation
1,763,147,861.44 : 2,644,721,398.50 = 642,755,515.48 : x - Step 2: Convert to fraction form
1,763,147,861.44/2,644,721,398.50 = 642,755,515.48/x - Step 3: Cross multiply
1,763,147,861.44x = 2,644,721,398.50 × 642,755,515.48 - Step 4: Simplify right side
1,763,147,861.44x = 1,699,909,265,793,853,952 - Step 5: Solve for x
x = 1,699,909,265,793,853,952/1,763,147,861.44 - Step 6: Final answer
x = 964,133,129.71
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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.