Finding the Fourth Proportional to 3,919,415.18, 5,879,120.58 and 1,223,971.38
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Solution
The fourth proportional to 3,919,415.18, 5,879,120.58 and 1,223,971.38 is: 1,835,956.39
Step by Step Solution
- Step 1: Write the proportion equation
3,919,415.18 : 5,879,120.58 = 1,223,971.38 : x - Step 2: Convert to fraction form
3,919,415.18/5,879,120.58 = 1,223,971.38/x - Step 3: Cross multiply
3,919,415.18x = 5,879,120.58 × 1,223,971.38 - Step 4: Simplify right side
3,919,415.18x = 7,195,875,329,489 - Step 5: Solve for x
x = 7,195,875,329,489/3,919,415.18 - Step 6: Final answer
x = 1,835,956.39
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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.