Finding the Fourth Proportional to 9,521,640.84, 13,143,886.38 and 6,428,353.80
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Solution
The fourth proportional to 9,521,640.84, 13,143,886.38 and 6,428,353.80 is: 8,873,843.63
Step by Step Solution
- Step 1: Write the proportion equation
9,521,640.84 : 13,143,886.38 = 6,428,353.80 : x - Step 2: Convert to fraction form
9,521,640.84/13,143,886.38 = 6,428,353.80/x - Step 3: Cross multiply
9,521,640.84x = 13,143,886.38 × 6,428,353.80 - Step 4: Simplify right side
9,521,640.84x = 84,493,551,957,641.25 - Step 5: Solve for x
x = 84,493,551,957,641.25/9,521,640.84 - Step 6: Final answer
x = 8,873,843.63
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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.