Finding the Fourth Proportional to 1,215,261,647.20, 1,822,942,237.20 and 353,618,639.20
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Solution
The fourth proportional to 1,215,261,647.20, 1,822,942,237.20 and 353,618,639.20 is: 530,442,439.90
Step by Step Solution
- Step 1: Write the proportion equation
1,215,261,647.20 : 1,822,942,237.20 = 353,618,639.20 : x - Step 2: Convert to fraction form
1,215,261,647.20/1,822,942,237.20 = 353,618,639.20/x - Step 3: Cross multiply
1,215,261,647.20x = 1,822,942,237.20 × 353,618,639.20 - Step 4: Simplify right side
1,215,261,647.20x = 644,626,353,258,867,584 - Step 5: Solve for x
x = 644,626,353,258,867,584/1,215,261,647.20 - Step 6: Final answer
x = 530,442,439.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.