Finding the Fourth Proportional to 7,881,325.70, 11,821,988.55 and 3,087,421.70
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Solution
The fourth proportional to 7,881,325.70, 11,821,988.55 and 3,087,421.70 is: 4,631,132.55
Step by Step Solution
- Step 1: Write the proportion equation
7,881,325.70 : 11,821,988.55 = 3,087,421.70 : x - Step 2: Convert to fraction form
7,881,325.70/11,821,988.55 = 3,087,421.70/x - Step 3: Cross multiply
7,881,325.70x = 11,821,988.55 × 3,087,421.70 - Step 4: Simplify right side
7,881,325.70x = 36,499,463,986,421.54 - Step 5: Solve for x
x = 36,499,463,986,421.54/7,881,325.70 - Step 6: Final answer
x = 4,631,132.55
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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.