Finding the Fourth Proportional to 431,844,761.21, 647,246,705.06 and 198,353,271.02
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Solution
The fourth proportional to 431,844,761.21, 647,246,705.06 and 198,353,271.02 is: 297,290,861.52
Step by Step Solution
- Step 1: Write the proportion equation
431,844,761.21 : 647,246,705.06 = 198,353,271.02 : x - Step 2: Convert to fraction form
431,844,761.21/647,246,705.06 = 198,353,271.02/x - Step 3: Cross multiply
431,844,761.21x = 647,246,705.06 × 198,353,271.02 - Step 4: Simplify right side
431,844,761.21x = 128,383,501,102,827,824 - Step 5: Solve for x
x = 128,383,501,102,827,824/431,844,761.21 - Step 6: Final answer
x = 297,290,861.52
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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.