Finding the Fourth Proportional to 3,911,972.78, 5,398,442 and 2,169,360.96
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Solution
The fourth proportional to 3,911,972.78, 5,398,442 and 2,169,360.96 is: 2,993,673.52
Step by Step Solution
- Step 1: Write the proportion equation
3,911,972.78 : 5,398,442 = 2,169,360.96 : x - Step 2: Convert to fraction form
3,911,972.78/5,398,442 = 2,169,360.96/x - Step 3: Cross multiply
3,911,972.78x = 5,398,442 × 2,169,360.96 - Step 4: Simplify right side
3,911,972.78x = 11,711,169,319,624.32 - Step 5: Solve for x
x = 11,711,169,319,624.32/3,911,972.78 - Step 6: Final answer
x = 2,993,673.52
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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.