Finding the Fourth Proportional to 3,931,608,372.13, 5,897,434,603.74 and 1,311,405,283.45
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Solution
The fourth proportional to 3,931,608,372.13, 5,897,434,603.74 and 1,311,405,283.45 is: 1,967,115,278.56
Step by Step Solution
- Step 1: Write the proportion equation
3,931,608,372.13 : 5,897,434,603.74 = 1,311,405,283.45 : x - Step 2: Convert to fraction form
3,931,608,372.13/5,897,434,603.74 = 1,311,405,283.45/x - Step 3: Cross multiply
3,931,608,372.13x = 5,897,434,603.74 × 1,311,405,283.45 - Step 4: Simplify right side
3,931,608,372.13x = 7,733,926,898,145,492,992 - Step 5: Solve for x
x = 7,733,926,898,145,492,992/3,931,608,372.13 - Step 6: Final answer
x = 1,967,115,278.56
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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.