Finding the Fourth Proportional to 3,418,513.76, 4,717,643.64 and 1,890,717.68
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Solution
The fourth proportional to 3,418,513.76, 4,717,643.64 and 1,890,717.68 is: 2,609,242.75
Step by Step Solution
- Step 1: Write the proportion equation
3,418,513.76 : 4,717,643.64 = 1,890,717.68 : x - Step 2: Convert to fraction form
3,418,513.76/4,717,643.64 = 1,890,717.68/x - Step 3: Cross multiply
3,418,513.76x = 4,717,643.64 × 1,890,717.68 - Step 4: Simplify right side
3,418,513.76x = 8,919,732,238,087.56 - Step 5: Solve for x
x = 8,919,732,238,087.56/3,418,513.76 - Step 6: Final answer
x = 2,609,242.75
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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.