Finding the Fourth Proportional to 5,187,522.21, 7,142,933.40 and 4,700,921.54
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Solution
The fourth proportional to 5,187,522.21, 7,142,933.40 and 4,700,921.54 is: 6,472,910.99
Step by Step Solution
- Step 1: Write the proportion equation
5,187,522.21 : 7,142,933.40 = 4,700,921.54 : x - Step 2: Convert to fraction form
5,187,522.21/7,142,933.40 = 4,700,921.54/x - Step 3: Cross multiply
5,187,522.21x = 7,142,933.40 × 4,700,921.54 - Step 4: Simplify right side
5,187,522.21x = 33,578,369,505,601.41 - Step 5: Solve for x
x = 33,578,369,505,601.41/5,187,522.21 - Step 6: Final answer
x = 6,472,910.99
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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.