Finding the Fourth Proportional to 6,117,646.31, 8,438,908.69 and 3,669,605.99
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Solution
The fourth proportional to 6,117,646.31, 8,438,908.69 and 3,669,605.99 is: 5,061,990.89
Step by Step Solution
- Step 1: Write the proportion equation
6,117,646.31 : 8,438,908.69 = 3,669,605.99 : x - Step 2: Convert to fraction form
6,117,646.31/8,438,908.69 = 3,669,605.99/x - Step 3: Cross multiply
6,117,646.31x = 8,438,908.69 × 3,669,605.99 - Step 4: Simplify right side
6,117,646.31x = 30,967,469,877,887.05 - Step 5: Solve for x
x = 30,967,469,877,887.05/6,117,646.31 - Step 6: Final answer
x = 5,061,990.89
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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.