Finding the Fourth Proportional to 8,421,811.70, 12,609,097.95 and 8,185,615.70
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Solution
The fourth proportional to 8,421,811.70, 12,609,097.95 and 8,185,615.70 is: 12,255,466.38
Step by Step Solution
- Step 1: Write the proportion equation
8,421,811.70 : 12,609,097.95 = 8,185,615.70 : x - Step 2: Convert to fraction form
8,421,811.70/12,609,097.95 = 8,185,615.70/x - Step 3: Cross multiply
8,421,811.70x = 12,609,097.95 × 8,185,615.70 - Step 4: Simplify right side
8,421,811.70x = 103,213,230,142,357.81 - Step 5: Solve for x
x = 103,213,230,142,357.81/8,421,811.70 - Step 6: Final answer
x = 12,255,466.38
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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.