Finding the Fourth Proportional to 478,851.70, 718,277.55 and 385,539.70
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Solution
The fourth proportional to 478,851.70, 718,277.55 and 385,539.70 is: 578,309.55
Step by Step Solution
- Step 1: Write the proportion equation
478,851.70 : 718,277.55 = 385,539.70 : x - Step 2: Convert to fraction form
478,851.70/718,277.55 = 385,539.70/x - Step 3: Cross multiply
478,851.70x = 718,277.55 × 385,539.70 - Step 4: Simplify right side
478,851.70x = 276,924,511,143.74 - Step 5: Solve for x
x = 276,924,511,143.74/478,851.70 - Step 6: Final answer
x = 578,309.55
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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.