Finding the Fourth Proportional to 5,421,973.96, 8,132,979.94 and 1,378,462.21
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Solution
The fourth proportional to 5,421,973.96, 8,132,979.94 and 1,378,462.21 is: 2,067,698.15
Step by Step Solution
- Step 1: Write the proportion equation
5,421,973.96 : 8,132,979.94 = 1,378,462.21 : x - Step 2: Convert to fraction form
5,421,973.96/8,132,979.94 = 1,378,462.21/x - Step 3: Cross multiply
5,421,973.96x = 8,132,979.94 × 1,378,462.21 - Step 4: Simplify right side
5,421,973.96x = 11,211,005,501,978.07 - Step 5: Solve for x
x = 11,211,005,501,978.07/5,421,973.96 - Step 6: Final answer
x = 2,067,698.15
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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.