Finding the Fourth Proportional to 5,128,836.41, 7,692,686.04 and 1,290,659.87
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Solution
The fourth proportional to 5,128,836.41, 7,692,686.04 and 1,290,659.87 is: 1,935,846.72
Step by Step Solution
- Step 1: Write the proportion equation
5,128,836.41 : 7,692,686.04 = 1,290,659.87 : x - Step 2: Convert to fraction form
5,128,836.41/7,692,686.04 = 1,290,659.87/x - Step 3: Cross multiply
5,128,836.41x = 7,692,686.04 × 1,290,659.87 - Step 4: Simplify right side
5,128,836.41x = 9,928,641,164,337.22 - Step 5: Solve for x
x = 9,928,641,164,337.22/5,128,836.41 - Step 6: Final answer
x = 1,935,846.72
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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.