Finding the Fourth Proportional to 4,390,933.20, 6,573,569.40 and 3,131,221.20
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Solution
The fourth proportional to 4,390,933.20, 6,573,569.40 and 3,131,221.20 is: 4,687,682.31
Step by Step Solution
- Step 1: Write the proportion equation
4,390,933.20 : 6,573,569.40 = 3,131,221.20 : x - Step 2: Convert to fraction form
4,390,933.20/6,573,569.40 = 3,131,221.20/x - Step 3: Cross multiply
4,390,933.20x = 6,573,569.40 × 3,131,221.20 - Step 4: Simplify right side
4,390,933.20x = 20,583,299,864,951.28 - Step 5: Solve for x
x = 20,583,299,864,951.28/4,390,933.20 - Step 6: Final answer
x = 4,687,682.31
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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.