Finding the Fourth Proportional to 426,492,341.20, 639,738,511.80 and 196,909,829.20
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Solution
The fourth proportional to 426,492,341.20, 639,738,511.80 and 196,909,829.20 is: 295,364,743.80
Step by Step Solution
- Step 1: Write the proportion equation
426,492,341.20 : 639,738,511.80 = 196,909,829.20 : x - Step 2: Convert to fraction form
426,492,341.20/639,738,511.80 = 196,909,829.20/x - Step 3: Cross multiply
426,492,341.20x = 639,738,511.80 × 196,909,829.20 - Step 4: Simplify right side
426,492,341.20x = 125,970,801,091,200,160 - Step 5: Solve for x
x = 125,970,801,091,200,160/426,492,341.20 - Step 6: Final answer
x = 295,364,743.80
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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.