Finding the Fourth Proportional to 7,766,431.32, 11,651,328.60 and 2,974,120.80
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Solution
The fourth proportional to 7,766,431.32, 11,651,328.60 and 2,974,120.80 is: 4,461,825.17
Step by Step Solution
- Step 1: Write the proportion equation
7,766,431.32 : 11,651,328.60 = 2,974,120.80 : x - Step 2: Convert to fraction form
7,766,431.32/11,651,328.60 = 2,974,120.80/x - Step 3: Cross multiply
7,766,431.32x = 11,651,328.60 × 2,974,120.80 - Step 4: Simplify right side
7,766,431.32x = 34,652,458,736,894.88 - Step 5: Solve for x
x = 34,652,458,736,894.88/7,766,431.32 - Step 6: Final answer
x = 4,461,825.17
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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.