Finding the Fourth Proportional to 28,473,406.62, 42,717,390.21 and 8,278,648.62
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Solution
The fourth proportional to 28,473,406.62, 42,717,390.21 and 8,278,648.62 is: 12,420,089.67
Step by Step Solution
- Step 1: Write the proportion equation
28,473,406.62 : 42,717,390.21 = 8,278,648.62 : x - Step 2: Convert to fraction form
28,473,406.62/42,717,390.21 = 8,278,648.62/x - Step 3: Cross multiply
28,473,406.62x = 42,717,390.21 × 8,278,648.62 - Step 4: Simplify right side
28,473,406.62x = 353,642,263,512,018 - Step 5: Solve for x
x = 353,642,263,512,018/28,473,406.62 - Step 6: Final answer
x = 12,420,089.67
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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.