Finding the Fourth Proportional to 7,790,681.57, 11,739,199.43 and 6,401,849.09
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Solution
The fourth proportional to 7,790,681.57, 11,739,199.43 and 6,401,849.09 is: 9,646,470.91
Step by Step Solution
- Step 1: Write the proportion equation
7,790,681.57 : 11,739,199.43 = 6,401,849.09 : x - Step 2: Convert to fraction form
7,790,681.57/11,739,199.43 = 6,401,849.09/x - Step 3: Cross multiply
7,790,681.57x = 11,739,199.43 × 6,401,849.09 - Step 4: Simplify right side
7,790,681.57x = 75,152,583,097,568.78 - Step 5: Solve for x
x = 75,152,583,097,568.78/7,790,681.57 - Step 6: Final answer
x = 9,646,470.91
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.