Finding the Fourth Proportional to 3,931,608,276.78, 5,897,434,461.63 and 1,311,405,188.70
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Solution
The fourth proportional to 3,931,608,276.78, 5,897,434,461.63 and 1,311,405,188.70 is: 1,967,115,136.74
Step by Step Solution
- Step 1: Write the proportion equation
3,931,608,276.78 : 5,897,434,461.63 = 1,311,405,188.70 : x - Step 2: Convert to fraction form
3,931,608,276.78/5,897,434,461.63 = 1,311,405,188.70/x - Step 3: Cross multiply
3,931,608,276.78x = 5,897,434,461.63 × 1,311,405,188.70 - Step 4: Simplify right side
3,931,608,276.78x = 7,733,926,152,999,773,184 - Step 5: Solve for x
x = 7,733,926,152,999,773,184/3,931,608,276.78 - Step 6: Final answer
x = 1,967,115,136.74
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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.