Finding the Fourth Proportional to 8,579,178.24, 12,868,756.56 and 2,189,430.78
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Solution
The fourth proportional to 8,579,178.24, 12,868,756.56 and 2,189,430.78 is: 3,284,143.41
Step by Step Solution
- Step 1: Write the proportion equation
8,579,178.24 : 12,868,756.56 = 2,189,430.78 : x - Step 2: Convert to fraction form
8,579,178.24/12,868,756.56 = 2,189,430.78/x - Step 3: Cross multiply
8,579,178.24x = 12,868,756.56 × 2,189,430.78 - Step 4: Simplify right side
8,579,178.24x = 28,175,251,712,790.91 - Step 5: Solve for x
x = 28,175,251,712,790.91/8,579,178.24 - Step 6: Final answer
x = 3,284,143.41
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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.