Finding the Fourth Proportional to 7,874,135.20, 11,811,202.80 and 1,890,503.20
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Solution
The fourth proportional to 7,874,135.20, 11,811,202.80 and 1,890,503.20 is: 2,835,754.80
Step by Step Solution
- Step 1: Write the proportion equation
7,874,135.20 : 11,811,202.80 = 1,890,503.20 : x - Step 2: Convert to fraction form
7,874,135.20/11,811,202.80 = 1,890,503.20/x - Step 3: Cross multiply
7,874,135.20x = 11,811,202.80 × 1,890,503.20 - Step 4: Simplify right side
7,874,135.20x = 22,329,116,689,248.96 - Step 5: Solve for x
x = 22,329,116,689,248.96/7,874,135.20 - Step 6: Final answer
x = 2,835,754.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.