Finding the Fourth Proportional to 3,921,421.62, 5,411,444.70 and 2,179,085.63
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Solution
The fourth proportional to 3,921,421.62, 5,411,444.70 and 2,179,085.63 is: 3,007,073.07
Step by Step Solution
- Step 1: Write the proportion equation
3,921,421.62 : 5,411,444.70 = 2,179,085.63 : x - Step 2: Convert to fraction form
3,921,421.62/5,411,444.70 = 2,179,085.63/x - Step 3: Cross multiply
3,921,421.62x = 5,411,444.70 × 2,179,085.63 - Step 4: Simplify right side
3,921,421.62x = 11,792,001,356,252.44 - Step 5: Solve for x
x = 11,792,001,356,252.44/3,921,421.62 - Step 6: Final answer
x = 3,007,073.07
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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.