Finding the Fourth Proportional to 425,738,998.20, 638,608,497.30 and 379,822,495.80
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Solution
The fourth proportional to 425,738,998.20, 638,608,497.30 and 379,822,495.80 is: 569,733,743.70
Step by Step Solution
- Step 1: Write the proportion equation
425,738,998.20 : 638,608,497.30 = 379,822,495.80 : x - Step 2: Convert to fraction form
425,738,998.20/638,608,497.30 = 379,822,495.80/x - Step 3: Cross multiply
425,738,998.20x = 638,608,497.30 × 379,822,495.80 - Step 4: Simplify right side
425,738,998.20x = 242,557,873,283,573,536 - Step 5: Solve for x
x = 242,557,873,283,573,536/425,738,998.20 - Step 6: Final answer
x = 569,733,743.70
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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.