Finding the Fourth Proportional to 5,377,390.63, 7,420,705.61 and 2,930,021.80
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Solution
The fourth proportional to 5,377,390.63, 7,420,705.61 and 2,930,021.80 is: 4,043,379.16
Step by Step Solution
- Step 1: Write the proportion equation
5,377,390.63 : 7,420,705.61 = 2,930,021.80 : x - Step 2: Convert to fraction form
5,377,390.63/7,420,705.61 = 2,930,021.80/x - Step 3: Cross multiply
5,377,390.63x = 7,420,705.61 × 2,930,021.80 - Step 4: Simplify right side
5,377,390.63x = 21,742,829,208,682.30 - Step 5: Solve for x
x = 21,742,829,208,682.30/5,377,390.63 - Step 6: Final answer
x = 4,043,379.16
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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.