Finding the Fourth Proportional to 3,178,523.07, 4,386,330.86 and 1,728,218.48
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Solution
The fourth proportional to 3,178,523.07, 4,386,330.86 and 1,728,218.48 is: 2,384,924.65
Step by Step Solution
- Step 1: Write the proportion equation
3,178,523.07 : 4,386,330.86 = 1,728,218.48 : x - Step 2: Convert to fraction form
3,178,523.07/4,386,330.86 = 1,728,218.48/x - Step 3: Cross multiply
3,178,523.07x = 4,386,330.86 × 1,728,218.48 - Step 4: Simplify right side
3,178,523.07x = 7,580,538,021,073.55 - Step 5: Solve for x
x = 7,580,538,021,073.55/3,178,523.07 - Step 6: Final answer
x = 2,384,924.65
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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.