Finding the Fourth Proportional to 1,328,867,546.20, 1,993,301,319.30 and 708,994,763.80
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Solution
The fourth proportional to 1,328,867,546.20, 1,993,301,319.30 and 708,994,763.80 is: 1,063,492,145.70
Step by Step Solution
- Step 1: Write the proportion equation
1,328,867,546.20 : 1,993,301,319.30 = 708,994,763.80 : x - Step 2: Convert to fraction form
1,328,867,546.20/1,993,301,319.30 = 708,994,763.80/x - Step 3: Cross multiply
1,328,867,546.20x = 1,993,301,319.30 × 708,994,763.80 - Step 4: Simplify right side
1,328,867,546.20x = 1,413,240,198,059,331,840 - Step 5: Solve for x
x = 1,413,240,198,059,331,840/1,328,867,546.20 - Step 6: Final answer
x = 1,063,492,145.70
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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.