Finding the Fourth Proportional to 9,153,192.40, 12,630,570.32 and 5,431,381.99
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Solution
The fourth proportional to 9,153,192.40, 12,630,570.32 and 5,431,381.99 is: 7,494,811.55
Step by Step Solution
- Step 1: Write the proportion equation
9,153,192.40 : 12,630,570.32 = 5,431,381.99 : x - Step 2: Convert to fraction form
9,153,192.40/12,630,570.32 = 5,431,381.99/x - Step 3: Cross multiply
9,153,192.40x = 12,630,570.32 × 5,431,381.99 - Step 4: Simplify right side
9,153,192.40x = 68,601,452,141,478.56 - Step 5: Solve for x
x = 68,601,452,141,478.56/9,153,192.40 - Step 6: Final answer
x = 7,494,811.55
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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.