Finding the Fourth Proportional to 478,363.20, 717,544.80 and 278,908.80
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Solution
The fourth proportional to 478,363.20, 717,544.80 and 278,908.80 is: 418,363.20
Step by Step Solution
- Step 1: Write the proportion equation
478,363.20 : 717,544.80 = 278,908.80 : x - Step 2: Convert to fraction form
478,363.20/717,544.80 = 278,908.80/x - Step 3: Cross multiply
478,363.20x = 717,544.80 × 278,908.80 - Step 4: Simplify right side
478,363.20x = 200,129,559,114.24 - Step 5: Solve for x
x = 200,129,559,114.24/478,363.20 - Step 6: Final answer
x = 418,363.20
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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.