Finding the Fourth Proportional to 407,943.80, 611,915.70 and 314,631.80
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Solution
The fourth proportional to 407,943.80, 611,915.70 and 314,631.80 is: 471,947.70
Step by Step Solution
- Step 1: Write the proportion equation
407,943.80 : 611,915.70 = 314,631.80 : x - Step 2: Convert to fraction form
407,943.80/611,915.70 = 314,631.80/x - Step 3: Cross multiply
407,943.80x = 611,915.70 × 314,631.80 - Step 4: Simplify right side
407,943.80x = 192,528,138,139.26 - Step 5: Solve for x
x = 192,528,138,139.26/407,943.80 - Step 6: Final answer
x = 471,947.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.