Finding the Fourth Proportional to 7,042,518.84, 9,718,716.42 and 4,142,031.96
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Solution
The fourth proportional to 7,042,518.84, 9,718,716.42 and 4,142,031.96 is: 5,716,027.88
Step by Step Solution
- Step 1: Write the proportion equation
7,042,518.84 : 9,718,716.42 = 4,142,031.96 : x - Step 2: Convert to fraction form
7,042,518.84/9,718,716.42 = 4,142,031.96/x - Step 3: Cross multiply
7,042,518.84x = 9,718,716.42 × 4,142,031.96 - Step 4: Simplify right side
7,042,518.84x = 40,255,234,021,816.78 - Step 5: Solve for x
x = 40,255,234,021,816.78/7,042,518.84 - Step 6: Final answer
x = 5,716,027.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.