Finding the Fourth Proportional to 1,236,603,442.30, 1,854,905,163.45 and 418,715,743.30
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Solution
The fourth proportional to 1,236,603,442.30, 1,854,905,163.45 and 418,715,743.30 is: 628,073,614.95
Step by Step Solution
- Step 1: Write the proportion equation
1,236,603,442.30 : 1,854,905,163.45 = 418,715,743.30 : x - Step 2: Convert to fraction form
1,236,603,442.30/1,854,905,163.45 = 418,715,743.30/x - Step 3: Cross multiply
1,236,603,442.30x = 1,854,905,163.45 × 418,715,743.30 - Step 4: Simplify right side
1,236,603,442.30x = 776,677,994,264,974,848 - Step 5: Solve for x
x = 776,677,994,264,974,848/1,236,603,442.30 - Step 6: Final answer
x = 628,073,614.95
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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.