Finding the Fourth Proportional to 5,128,968.18, 7,076,257.11 and 2,953,464.51
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Solution
The fourth proportional to 5,128,968.18, 7,076,257.11 and 2,953,464.51 is: 4,074,791.17
Step by Step Solution
- Step 1: Write the proportion equation
5,128,968.18 : 7,076,257.11 = 2,953,464.51 : x - Step 2: Convert to fraction form
5,128,968.18/7,076,257.11 = 2,953,464.51/x - Step 3: Cross multiply
5,128,968.18x = 7,076,257.11 × 2,953,464.51 - Step 4: Simplify right side
5,128,968.18x = 20,899,474,238,020.16 - Step 5: Solve for x
x = 20,899,474,238,020.16/5,128,968.18 - Step 6: Final answer
x = 4,074,791.17
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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.