Finding the Fourth Proportional to 891,656,042.47, 1,230,337,699.69 and 515,347,672.09
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Solution
The fourth proportional to 891,656,042.47, 1,230,337,699.69 and 515,347,672.09 is: 711,094,457.08
Step by Step Solution
- Step 1: Write the proportion equation
891,656,042.47 : 1,230,337,699.69 = 515,347,672.09 : x - Step 2: Convert to fraction form
891,656,042.47/1,230,337,699.69 = 515,347,672.09/x - Step 3: Cross multiply
891,656,042.47x = 1,230,337,699.69 × 515,347,672.09 - Step 4: Simplify right side
891,656,042.47x = 634,051,669,419,806,976 - Step 5: Solve for x
x = 634,051,669,419,806,976/891,656,042.47 - Step 6: Final answer
x = 711,094,457.08
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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.