Finding the Fourth Proportional to 472,394,138.80, 708,591,208.20 and 242,811,626.80
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Solution
The fourth proportional to 472,394,138.80, 708,591,208.20 and 242,811,626.80 is: 364,217,440.20
Step by Step Solution
- Step 1: Write the proportion equation
472,394,138.80 : 708,591,208.20 = 242,811,626.80 : x - Step 2: Convert to fraction form
472,394,138.80/708,591,208.20 = 242,811,626.80/x - Step 3: Cross multiply
472,394,138.80x = 708,591,208.20 × 242,811,626.80 - Step 4: Simplify right side
472,394,138.80x = 172,054,183,999,219,520 - Step 5: Solve for x
x = 172,054,183,999,219,520/472,394,138.80 - Step 6: Final answer
x = 364,217,440.20
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1.5x scale
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.