Finding the Fourth Proportional to 5,378,335.56, 7,421,838.80 and 2,930,939.02
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Solution
The fourth proportional to 5,378,335.56, 7,421,838.80 and 2,930,939.02 is: 4,044,551.83
Step by Step Solution
- Step 1: Write the proportion equation
5,378,335.56 : 7,421,838.80 = 2,930,939.02 : x - Step 2: Convert to fraction form
5,378,335.56/7,421,838.80 = 2,930,939.02/x - Step 3: Cross multiply
5,378,335.56x = 7,421,838.80 × 2,930,939.02 - Step 4: Simplify right side
5,378,335.56x = 21,752,956,939,069.98 - Step 5: Solve for x
x = 21,752,956,939,069.98/5,378,335.56 - Step 6: Final answer
x = 4,044,551.83
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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.