Finding the Fourth Proportional to 5,731,986.49, 7,910,204.21 and 3,118,505.53
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Solution
The fourth proportional to 5,731,986.49, 7,910,204.21 and 3,118,505.53 is: 4,303,571.83
Step by Step Solution
- Step 1: Write the proportion equation
5,731,986.49 : 7,910,204.21 = 3,118,505.53 : x - Step 2: Convert to fraction form
5,731,986.49/7,910,204.21 = 3,118,505.53/x - Step 3: Cross multiply
5,731,986.49x = 7,910,204.21 × 3,118,505.53 - Step 4: Simplify right side
5,731,986.49x = 24,668,015,572,314.28 - Step 5: Solve for x
x = 24,668,015,572,314.28/5,731,986.49 - Step 6: Final answer
x = 4,303,571.83
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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.