Finding the Fourth Proportional to 419,623.74, 579,073.47 and 228,638.70
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Solution
The fourth proportional to 419,623.74, 579,073.47 and 228,638.70 is: 315,517.43
Step by Step Solution
- Step 1: Write the proportion equation
419,623.74 : 579,073.47 = 228,638.70 : x - Step 2: Convert to fraction form
419,623.74/579,073.47 = 228,638.70/x - Step 3: Cross multiply
419,623.74x = 579,073.47 × 228,638.70 - Step 4: Simplify right side
419,623.74x = 132,398,605,385.29 - Step 5: Solve for x
x = 132,398,605,385.29/419,623.74 - Step 6: Final answer
x = 315,517.43
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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.