Finding the Fourth Proportional to 5,731,738.40, 7,909,798.64 and 3,153,363.78
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Solution
The fourth proportional to 5,731,738.40, 7,909,798.64 and 3,153,363.78 is: 4,351,641.82
Step by Step Solution
- Step 1: Write the proportion equation
5,731,738.40 : 7,909,798.64 = 3,153,363.78 : x - Step 2: Convert to fraction form
5,731,738.40/7,909,798.64 = 3,153,363.78/x - Step 3: Cross multiply
5,731,738.40x = 7,909,798.64 × 3,153,363.78 - Step 4: Simplify right side
5,731,738.40x = 24,942,472,538,469.26 - Step 5: Solve for x
x = 24,942,472,538,469.26/5,731,738.40 - Step 6: Final answer
x = 4,351,641.82
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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.