Finding the Fourth Proportional to 19,331,923.20, 28,996,963.20 and 6,551,174.40
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Solution
The fourth proportional to 19,331,923.20, 28,996,963.20 and 6,551,174.40 is: 9,826,449.29
Step by Step Solution
- Step 1: Write the proportion equation
19,331,923.20 : 28,996,963.20 = 6,551,174.40 : x - Step 2: Convert to fraction form
19,331,923.20/28,996,963.20 = 6,551,174.40/x - Step 3: Cross multiply
19,331,923.20x = 28,996,963.20 × 6,551,174.40 - Step 4: Simplify right side
19,331,923.20x = 189,964,162,993,582.09 - Step 5: Solve for x
x = 189,964,162,993,582.09/19,331,923.20 - Step 6: Final answer
x = 9,826,449.29
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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.