Finding the Fourth Proportional to 2,158,986.24, 2,979,447.57 and 1,192,177.98
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Solution
The fourth proportional to 2,158,986.24, 2,979,447.57 and 1,192,177.98 is: 1,645,231.32
Step by Step Solution
- Step 1: Write the proportion equation
2,158,986.24 : 2,979,447.57 = 1,192,177.98 : x - Step 2: Convert to fraction form
2,158,986.24/2,979,447.57 = 1,192,177.98/x - Step 3: Cross multiply
2,158,986.24x = 2,979,447.57 × 1,192,177.98 - Step 4: Simplify right side
2,158,986.24x = 3,552,031,785,518.51 - Step 5: Solve for x
x = 3,552,031,785,518.51/2,158,986.24 - Step 6: Final answer
x = 1,645,231.32
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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.