Finding the Fourth Proportional to 921,131.76, 1,381,883.88 and 388,654.08
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Solution
The fourth proportional to 921,131.76, 1,381,883.88 and 388,654.08 is: 583,059.70
Step by Step Solution
- Step 1: Write the proportion equation
921,131.76 : 1,381,883.88 = 388,654.08 : x - Step 2: Convert to fraction form
921,131.76/1,381,883.88 = 388,654.08/x - Step 3: Cross multiply
921,131.76x = 1,381,883.88 × 388,654.08 - Step 4: Simplify right side
921,131.76x = 537,074,808,048.23 - Step 5: Solve for x
x = 537,074,808,048.23/921,131.76 - Step 6: Final answer
x = 583,059.70
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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.