Finding the Fourth Proportional to 422,883.18, 583,606.08 and 279,391.68
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Solution
The fourth proportional to 422,883.18, 583,606.08 and 279,391.68 is: 385,578.55
Step by Step Solution
- Step 1: Write the proportion equation
422,883.18 : 583,606.08 = 279,391.68 : x - Step 2: Convert to fraction form
422,883.18/583,606.08 = 279,391.68/x - Step 3: Cross multiply
422,883.18x = 583,606.08 × 279,391.68 - Step 4: Simplify right side
422,883.18x = 163,054,683,149.41 - Step 5: Solve for x
x = 163,054,683,149.41/422,883.18 - Step 6: Final answer
x = 385,578.55
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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.