Finding the Fourth Proportional to 425,629,149.70, 638,443,724.55 and 425,629,149.70
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Solution
The fourth proportional to 425,629,149.70, 638,443,724.55 and 425,629,149.70 is: 638,443,724.55
Step by Step Solution
- Step 1: Write the proportion equation
425,629,149.70 : 638,443,724.55 = 425,629,149.70 : x - Step 2: Convert to fraction form
425,629,149.70/638,443,724.55 = 425,629,149.70/x - Step 3: Cross multiply
425,629,149.70x = 638,443,724.55 × 425,629,149.70 - Step 4: Simplify right side
425,629,149.70x = 271,740,259,611,517,472 - Step 5: Solve for x
x = 271,740,259,611,517,472/425,629,149.70 - Step 6: Final answer
x = 638,443,724.55
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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.