Finding the Fourth Proportional to 381,609,163.20, 572,413,744.80 and 260,676,811.20
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Solution
The fourth proportional to 381,609,163.20, 572,413,744.80 and 260,676,811.20 is: 391,015,216.80
Step by Step Solution
- Step 1: Write the proportion equation
381,609,163.20 : 572,413,744.80 = 260,676,811.20 : x - Step 2: Convert to fraction form
381,609,163.20/572,413,744.80 = 260,676,811.20/x - Step 3: Cross multiply
381,609,163.20x = 572,413,744.80 × 260,676,811.20 - Step 4: Simplify right side
381,609,163.20x = 149,214,989,681,514,560 - Step 5: Solve for x
x = 149,214,989,681,514,560/381,609,163.20 - Step 6: Final answer
x = 391,015,216.80
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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.