Finding the Fourth Proportional to 9,288,218.99, 12,816,581.56 and 5,157,688.53
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Solution
The fourth proportional to 9,288,218.99, 12,816,581.56 and 5,157,688.53 is: 7,116,965.67
Step by Step Solution
- Step 1: Write the proportion equation
9,288,218.99 : 12,816,581.56 = 5,157,688.53 : x - Step 2: Convert to fraction form
9,288,218.99/12,816,581.56 = 5,157,688.53/x - Step 3: Cross multiply
9,288,218.99x = 12,816,581.56 × 5,157,688.53 - Step 4: Simplify right side
9,288,218.99x = 66,103,935,738,175.79 - Step 5: Solve for x
x = 66,103,935,738,175.79/9,288,218.99 - Step 6: Final answer
x = 7,116,965.67
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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.