Finding the Fourth Proportional to 7,986,430.52, 11,039,891.99 and 7,123,814.50
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Solution
The fourth proportional to 7,986,430.52, 11,039,891.99 and 7,123,814.50 is: 9,847,470.97
Step by Step Solution
- Step 1: Write the proportion equation
7,986,430.52 : 11,039,891.99 = 7,123,814.50 : x - Step 2: Convert to fraction form
7,986,430.52/11,039,891.99 = 7,123,814.50/x - Step 3: Cross multiply
7,986,430.52x = 11,039,891.99 × 7,123,814.50 - Step 4: Simplify right side
7,986,430.52x = 78,646,142,690,445.33 - Step 5: Solve for x
x = 78,646,142,690,445.33/7,986,430.52 - Step 6: Final answer
x = 9,847,470.97
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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.