Finding the Fourth Proportional to 5,129,422.64, 7,078,811.64 and 2,837,543.84
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Solution
The fourth proportional to 5,129,422.64, 7,078,811.64 and 2,837,543.84 is: 3,915,925.78
Step by Step Solution
- Step 1: Write the proportion equation
5,129,422.64 : 7,078,811.64 = 2,837,543.84 : x - Step 2: Convert to fraction form
5,129,422.64/7,078,811.64 = 2,837,543.84/x - Step 3: Cross multiply
5,129,422.64x = 7,078,811.64 × 2,837,543.84 - Step 4: Simplify right side
5,129,422.64x = 20,086,438,363,602.30 - Step 5: Solve for x
x = 20,086,438,363,602.30/5,129,422.64 - Step 6: Final answer
x = 3,915,925.78
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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.