Finding the Fourth Proportional to 13,290,263.44, 18,340,570.88 and 7,178,691.92
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Solution
The fourth proportional to 13,290,263.44, 18,340,570.88 and 7,178,691.92 is: 9,906,598.81
Step by Step Solution
- Step 1: Write the proportion equation
13,290,263.44 : 18,340,570.88 = 7,178,691.92 : x - Step 2: Convert to fraction form
13,290,263.44/18,340,570.88 = 7,178,691.92/x - Step 3: Cross multiply
13,290,263.44x = 18,340,570.88 × 7,178,691.92 - Step 4: Simplify right side
13,290,263.44x = 131,661,307,984,443.28 - Step 5: Solve for x
x = 131,661,307,984,443.28/13,290,263.44 - Step 6: Final answer
x = 9,906,598.81
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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.