Finding the Fourth Proportional to 478,364.20, 717,546.30 and 278,909.80
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Solution
The fourth proportional to 478,364.20, 717,546.30 and 278,909.80 is: 418,364.70
Step by Step Solution
- Step 1: Write the proportion equation
478,364.20 : 717,546.30 = 278,909.80 : x - Step 2: Convert to fraction form
478,364.20/717,546.30 = 278,909.80/x - Step 3: Cross multiply
478,364.20x = 717,546.30 × 278,909.80 - Step 4: Simplify right side
478,364.20x = 200,130,695,023.74 - Step 5: Solve for x
x = 200,130,695,023.74/478,364.20 - Step 6: Final answer
x = 418,364.70
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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.