Finding the Fourth Proportional to 818,543.20, 1,227,814.80 and 257,577.70
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Solution
The fourth proportional to 818,543.20, 1,227,814.80 and 257,577.70 is: 386,366.55
Step by Step Solution
- Step 1: Write the proportion equation
818,543.20 : 1,227,814.80 = 257,577.70 : x - Step 2: Convert to fraction form
818,543.20/1,227,814.80 = 257,577.70/x - Step 3: Cross multiply
818,543.20x = 1,227,814.80 × 257,577.70 - Step 4: Simplify right side
818,543.20x = 316,257,712,209.96 - Step 5: Solve for x
x = 316,257,712,209.96/818,543.20 - Step 6: Final answer
x = 386,366.55
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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.