Finding the Fourth Proportional to 9,878,638.44, 14,817,874.42 and 7,721,478.03
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Solution
The fourth proportional to 9,878,638.44, 14,817,874.42 and 7,721,478.03 is: 11,582,151.98
Step by Step Solution
- Step 1: Write the proportion equation
9,878,638.44 : 14,817,874.42 = 7,721,478.03 : x - Step 2: Convert to fraction form
9,878,638.44/14,817,874.42 = 7,721,478.03/x - Step 3: Cross multiply
9,878,638.44x = 14,817,874.42 × 7,721,478.03 - Step 4: Simplify right side
9,878,638.44x = 114,415,891,785,329 - Step 5: Solve for x
x = 114,415,891,785,329/9,878,638.44 - Step 6: Final answer
x = 11,582,151.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.